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Lockheed C-130 Hercules
Lockheed C-130 Hercules
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The Lockheed C-130 Hercules is an American four-engine turboprop military transport aircraft designed and built by Lockheed (now Lockheed Martin). Capable of using unprepared runways for takeoffs and landings, the C-130 was originally designed as a troop, medevac, and cargo transport aircraft. The versatile airframe has found uses in other roles, including as a gunship (AC-130), for airborne assault, search and rescue, scientific research support, weather reconnaissance, aerial refueling, maritime patrol, and aerial firefighting. It is now the main tactical airlifter for many military forces worldwide. More than 40 variants of the Hercules, including civilian versions marketed as the Lockheed L-100, operate in more than 60 nations.

Key Information

The C-130 entered service with the U.S. in 1956, followed by Australia and many other nations. During its years of service, the Hercules has participated in numerous military, civilian and humanitarian aid operations. In 2007, the transport became the fifth aircraft[N 1] to mark 50 years of continuous service with its original primary customer, which for the C-130 is the United States Air Force (USAF). The C-130 is the longest continuously produced military aircraft, having achieved 70 years of production in 2024.[3]

Design and development

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Background and requirements

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The Korean War showed that World War II-era piston-engine transports—Fairchild C-119 Flying Boxcars, Douglas C-47 Skytrains and Curtiss C-46 Commandos—were no longer adequate. On 2 February 1951, the United States Air Force issued a General Operating Requirement (GOR) for a new transport to Boeing, Douglas, Fairchild, Lockheed, Martin, Chase Aircraft, North American, Northrop, and Airlifts Inc.

The new transport would have a capacity of 92 passengers, 72 combat troops or 64 paratroopers in a cargo compartment that was approximately 41 ft (12 m) long, 9 ft (2.7 m) high, and 10 ft (3.0 m) wide. Unlike transports derived from passenger airliners, it was to be designed specifically as a combat transport with loading from a hinged loading ramp at the rear of the fuselage. A notable advance for large aircraft was the introduction of a turboprop powerplant, the Allison T56 which was developed for the C-130. It gave the aircraft greater range than a turbojet engine as it used less fuel.[4][5] Turboprop engines also produced much more power for their weight than piston engines. However, the turboprop configuration chosen for the T56, with the propeller connected to the compressor, had the potential to cause structural failure of the aircraft if an engine failed. Safety devices had to be incorporated to reduce the excessive drag from a windmilling propeller.[4][5]

Design phase

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The Hercules resembles a larger, four-engine version of the Fairchild C-123 Provider with a similar wing and cargo ramp layout. The C-123 had evolved from the Chase XCG-20 Avitruc first flown in 1950.[6][7] The Boeing C-97 Stratofreighter had rear ramps, which made it possible to drive vehicles onto the airplane (also possible with the forward ramp on a C-124). The ramp on the Hercules was also used to airdrop cargo, which included a low-altitude parachute-extraction system for Sheridan tanks and even dropping large improvised "daisy cutter" bombs. The new Lockheed cargo plane had a range of 1,100 nmi (1,270 mi; 2,040 km) and it could operate from short and unprepared strips.

Fairchild, North American, Martin, and Northrop declined to participate. The remaining five companies tendered a total of ten designs: Lockheed two, Boeing one, Chase three, Douglas three, and Airlifts Inc. one. The contest was a close affair between the lighter of the two Lockheed (preliminary project designation L-206) proposals and a four-turboprop Douglas design.

The Lockheed design team was led by Willis Hawkins, starting with a 130-page proposal for the Lockheed L-206.[8] Hall Hibbard, Lockheed vice president and chief engineer, saw the proposal and directed it to Kelly Johnson, who did not care for the low-speed, unarmed aircraft, and remarked, "If you sign that letter, you will destroy the Lockheed Company."[8] Both Hibbard and Johnson signed the proposal and the company won the contract for the now-designated Model 82 on 2 July 1951.[9]

A C-130H Hercules flight deck. Aircraft displayed at the Norwegian Armed Forces Aircraft Collection

The first flight of the YC-130 prototype was made on 23 August 1954 from the Lockheed plant in Burbank, California. The aircraft, serial number 53-3397, was the second prototype, but the first of the two to fly. The YC-130 was piloted by Stanley Beltz and Roy Wimmer on its 61-minute flight to Edwards Air Force Base; Jack Real and Dick Stanton served as flight engineers. Kelly Johnson flew chase in a Lockheed P2V Neptune.[10]

After the two prototypes were completed, production began in Marietta, Georgia, where over 2,300 C-130s have been built through 2009.[11]

The initial production model, the C-130A, was powered by Allison T56-A-9 turboprops with three-blade propellers and originally equipped with the blunt nose of the prototypes. Deliveries began in December 1956, continuing until the introduction of the C-130B model in 1959. Some A-models were equipped with skis and re-designated C-130D. As the C-130A became operational with Tactical Air Command (TAC), the C-130's lack of range became apparent and additional fuel capacity was added with wing pylon-mounted tanks outboard of the engines; this added 6,000 pounds (2,700 kg) of fuel capacity for a total capacity of 40,000 pounds (18,000 kg).[12]

Improved versions

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A Michigan Air National Guard C-130E dispatches its flares during a low-level training mission
Two C-130 Hercules in South Korea, 1984
A C-130 conducts a night flight mission over Yokota Air Base

The C-130B model was developed to complement the A-models that had previously been delivered, and incorporated new features, particularly increased fuel capacity in the form of auxiliary tanks built into the center wing section and an AC electrical system. Four-bladed Hamilton Standard propellers replaced the Aero Products' three-blade propellers that distinguished the earlier A-models. The C-130B had ailerons operated by hydraulic pressure that was increased from 2,050 to 3,000 psi (14.1 to 20.7 MPa), as well as uprated engines and four-blade propellers that were standard until the J-model.

The B model was originally intended to have "blown controls", a system that blows high-pressure air over the control surfaces to improve their effectiveness during slow flight. It was tested on an NC-130B prototype aircraft with a pair of T-56 turbines providing high-pressure air through a duct system to the control surfaces and flaps during landing. This greatly reduced landing speed to just 63 knots and cut landing distance in half. The system never entered service because it did not improve takeoff performance by the same margin, making the landing performance pointless if the aircraft could not also take off from where it had landed.[13]

An electronic reconnaissance variant of the C-130B was designated C-130B-II. A total of 13 aircraft were converted. The C-130B-II was distinguished by its false external wing fuel tanks, which were disguised signals intelligence (SIGINT) receiver antennas. These pods were slightly larger than the standard wing tanks found on other C-130Bs. Most aircraft featured a swept blade antenna on the upper fuselage, as well as extra wire antennas between the vertical fin and upper fuselage not found on other C-130s. Radio call numbers on the tail of these aircraft were regularly changed to confuse observers and disguise their true mission.

The extended-range C-130E model entered service in 1962 after it was developed as an interim long-range transport for the Military Air Transport Service. Essentially a B-model, the new designation was the result of the installation of 1,360 US gallons (5,100 litres) Sargent Fletcher external fuel tanks under each wing's midsection and more powerful Allison T56-A-7A turboprops. The hydraulic boost pressure to the ailerons was reduced back to 2,050 psi (14.1 MPa) as a consequence of the external tanks' weight in the middle of the wingspan. The E model also featured structural improvements, avionics upgrades, and a higher gross weight. Australia took delivery of 12 C130E Hercules during 1966–67 to supplement the 12 C-130A models already in service with the RAAF. Sweden and Spain fly the TP-84T version of the C-130E fitted for aerial refueling capability.

The KC-130 tankers, originally C-130F procured for the US Marine Corps (USMC) in 1958 (under the designation GV-1) are equipped with a removable 3,600 US gallons (14,000 L) stainless steel fuel tank carried inside the cargo compartment. The two wing-mounted hose and drogue aerial refueling pods each transfer up to 300 US gallons per minute (1,100 L/min) to two aircraft simultaneously, allowing for rapid cycle times of multiple-receiver aircraft formations, (a typical tanker formation of four aircraft in less than 30 minutes). The US Navy's C-130G has increased structural strength allowing higher gross weight operation.

Further developments

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A Royal Air Force C-130K (C.3)

The C-130H model has updated Allison T56-A-15 turboprops, a redesigned outer wing, updated avionics, and other minor improvements. Later H models had a new, fatigue-life-improved, center wing that was retrofitted to many earlier H-models. For structural reasons, some models are required to land with reduced amounts of fuel when carrying heavy cargo, reducing usable range.[14]

The H model remains in widespread use with the United States Air Force (USAF) and many foreign air forces. Initial deliveries began in 1964 (to the RNZAF), remaining in production until 1996. An improved C-130H was introduced in 1974, with Australia purchasing 12 of the type in 1978 to replace the original 12 C-130A models, which had first entered Royal Australian Air Force (RAAF) service in 1958. The U.S. Coast Guard employs the HC-130H for long-range search and rescue, drug interdiction, illegal migrant patrols, homeland security, and logistics.

C-130H models produced from 1992 to 1996 were designated as C-130H3 by the USAF, with the "3" denoting the third variation in design for the H series. Improvements included ring laser gyros for the INUs, GPS receivers, a partial glass cockpit (ADI and HSI instruments), a more capable APN-241 color radar, night vision device compatible instrument lighting, and an integrated radar and missile warning system. The electrical system upgrade included Generator Control Units (GCU) and Bus Switching units (BSU) to provide stable power to the more sensitive upgraded components.[15]

The equivalent model for export to the UK is the C-130K, known by the Royal Air Force (RAF) as the Hercules C.1. The C-130H-30 (Hercules C.3 in RAF service) is a stretched version of the original Hercules, achieved by inserting a 100 in (2.5 m) plug aft of the cockpit and an 80 in (2.0 m) plug at the rear of the fuselage. A single C-130K was purchased by the Met Office for use by its Meteorological Research Flight, where it was classified as the Hercules W.2. This aircraft was heavily modified, with its most prominent feature being the long red and white striped atmospheric probe on the nose and the move of the weather radar into a pod above the forward fuselage. This aircraft, named Snoopy, was withdrawn in 2001 and was then modified by Marshall of Cambridge Aerospace as a flight testbed for the A400M turbine engine, the TP400. The C-130K is used by the RAF Falcons for parachute drops. Three C-130Ks (Hercules C Mk.1P) were upgraded and sold to the Austrian Air Force in 2002.[16]

Enhanced models

[edit]
A USAF HC-130P refuels a HH-60G Pavehawk helicopter

The MC-130E Combat Talon was developed for the USAF during the Vietnam War to support special operations missions in Southeast Asia, and led to both the MC-130H Combat Talon II as well as a family of other special missions aircraft. 37 of the earliest models currently operating with the Air Force Special Operations Command (AFSOC) are scheduled to be replaced by new-production MC-130J versions. The EC-130 Commando Solo is another special missions variant within AFSOC, albeit operated solely by an AFSOC-gained wing in the Pennsylvania Air National Guard, and is a psychological operations/information operations (PSYOP/IO) platform equipped as an aerial radio station and television stations able to transmit messaging over commercial frequencies. Other versions of the EC-130, most notably the EC-130H Compass Call, are also special variants, but are assigned to the Air Combat Command (ACC). The AC-130 gunship was first developed during the Vietnam War to provide close air support and other ground-attack duties.

The HC-130 is a family of long-range search and rescue variants used by the USAF and the U.S. Coast Guard. Equipped for the deep deployment of Pararescuemen (PJs), survival equipment, and (in the case of USAF versions) aerial refueling of combat rescue helicopters, HC-130s are usually the on-scene command aircraft for combat SAR missions (USAF only) and non-combat SAR (USAF and USCG). Early USAF versions were also equipped with the Fulton surface-to-air recovery system, designed to pull a person off the ground using a wire strung from a helium balloon. The John Wayne movie The Green Berets features its use. The Fulton system was later removed when aerial refueling of helicopters proved safer and more versatile. The movie The Perfect Storm depicts a real-life SAR mission involving aerial refueling of a New York Air National Guard HH-60G by a New York Air National Guard HC-130P.

The C-130R and C-130T are U.S. Navy and USMC models, both equipped with underwing external fuel tanks. The USN C-130T is similar but has additional avionics improvements. In both models, aircraft are equipped with Allison T56-A-16 engines. The USMC versions are designated KC-130R or KC-130T when equipped with underwing refueling pods and pylons and are fully night vision system compatible.

The RC-130 is a reconnaissance version developed during the Cold War. Sometimes called "ferret" aircraft, these planes were initially retrofitted standard C-130s.[17]

The Lockheed L-100 (L-382) is a civilian variant, equivalent to a C-130E model without military equipment. The L-100 also has two stretched versions.

Next generation

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In the 1970s, Lockheed proposed a C-130 variant with turbofan engines rather than turboprops, but the U.S. Air Force preferred the takeoff performance of the existing aircraft. In the 1980s, the C-130 was intended to be replaced by the Advanced Medium STOL Transport project. The project was canceled and the C-130 has remained in production.

Building on lessons learned, Lockheed Martin modified a commercial variant of the C-130 into a High Technology Test Bed (HTTB). This test aircraft set numerous short takeoff and landing performance records and significantly expanded the database for future derivatives of the C-130.[18] Modifications made to the HTTB included extended chord ailerons, a long chord rudder, fast-acting double-slotted trailing edge flaps, a high-camber wing leading edge extension, a larger dorsal fin and dorsal fins, the addition of three spoiler panels to each wing upper surface, a long-stroke main and nose landing gear system, and changes to the flight controls and a change from direct mechanical linkages assisted by hydraulic boost, to fully powered controls, in which the mechanical linkages from the flight station controls operated only the hydraulic control valves of the appropriate boost unit.[19]

The HTTB first flew on 19 June 1984, with civil registration of N130X. After demonstrating many new technologies, some of which were applied to the C-130J, the HTTB was lost in a fatal accident on 3 February 1993, at Dobbins Air Reserve Base, in Marietta, Georgia.[20] The crash was attributed to disengagement of the rudder fly-by-wire flight control system, resulting in a total loss of rudder control capability while conducting ground minimum control speed tests (Vmcg). The disengagement was a result of the inadequate design of the rudder's integrated actuator package by its manufacturer; the operator's insufficient system safety review failed to consider the consequences of the inadequate design to all operating regimes. A factor that contributed to the accident was the flight crew's lack of engineering flight test training.[21]

In the 1990s, the improved C-130J Super Hercules was developed by Lockheed (later Lockheed Martin). This model is the newest version and the only model in production. Externally similar to the classic Hercules in general appearance, the J model has new turboprop engines, six-bladed propellers, digital avionics, and other new systems.[22]

Upgrades and changes

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C-130H with eight-bladed NP2000 propellers

In 2000, Boeing was awarded a US$1.4 billion contract to develop an Avionics Modernization Program kit for the C-130. The program was beset with delays and cost overruns until project restructuring in 2007.[23] In September 2009, it was reported that the planned Avionics Modernization Program (AMP) upgrade to the older C-130s would be dropped to provide more funds for the F-35, CV-22 and airborne tanker replacement programs.[24] However, in June 2010, Department of Defense approved funding for the initial production of the AMP upgrade kits.[25][26] Under the terms of this agreement, the USAF has cleared Boeing to begin low-rate initial production (LRIP) for the C-130 AMP. A total of 198 aircraft are expected to feature the AMP upgrade. The current cost per aircraft is US$14 million, although Boeing expects that this price will drop to US$7 million for the 69th aircraft.[23]

In the 2000s, Lockheed Martin and the U.S. Air Force began outfitting and retrofitting C-130s with the eight-blade UTC Aerospace Systems NP2000 propellers.[27] An engine enhancement program saving fuel and providing lower temperatures in the T56 engine has been approved, and the US Air Force expects to save $2 billion (~$2.65 billion in 2024) and extend the fleet life.[28]

In 2021, the Air Force Research Laboratory demonstrated the Rapid Dragon system which transforms the C-130 into a lethal strike platform capable of launching 12 JASSM-ER with 500 kg warheads from a standoff distance of 925 km (575 mi). Future anticipated improvements support includes support for JDAM-ER, mine laying, drone dispersal as well as improved standoff range when 1,900 km (1,200 mi) JASSM-XR become available in 2024.[29][30]

Replacement

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In October 2010, the U.S. Air Force released a capability request for information (CRFI) for the development of a new airlifter to replace the C-130. The new aircraft was to carry a 190% greater payload and assume the mission of mounted vertical maneuver (MVM). The greater payload and mission would enable it to carry medium-weight armored vehicles and unload them at locations without long runways. Various options were under consideration, including new or upgraded fixed-wing designs, rotorcraft, tiltrotors, or even an airship. The C-130 fleet of around 450 planes would be replaced by only 250 aircraft.[31] The Air Force had attempted to replace the C-130 in the 1970s through the Advanced Medium STOL Transport project, which resulted in the C-17 Globemaster III that instead replaced the C-141 Starlifter.[32]

The Air Force Research Laboratory funded Lockheed Martin and Boeing demonstrators for the Speed Agile concept, which had the goal of making a STOL aircraft that could take off and land at speeds as low as 70 kn (130 km/h; 81 mph) on airfields less than 2,000 ft (610 m) long and cruise at Mach 0.8-plus. Boeing's design used upper-surface blowing from embedded engines on the inboard wing and blown flaps for circulation control on the outboard wing. Lockheed's design also used blown flaps outboard, but inboard used patented reversing ejector nozzles.[33]

Boeing's design completed over 2,000 hours of wind tunnel tests in late 2009. It was a 5 percent-scale model of a narrow body design with a 55,000 lb (25,000 kg) payload. When the AFRL increased the payload requirement to 65,000 lb (29,000 kg), they tested a 5 percent-scale model of a widebody design with a 303,000 lb (137,000 kg) take-off gross weight and an "A400M-size" 158 in (4.0 m) wide cargo box. It would be powered by four IAE V2533 turbofans.[33]

In August 2011, the AFRL released pictures of the Lockheed Speed Agile concept demonstrator. A 23% scale model went through wind tunnel tests to demonstrate its hybrid powered lift, which combined a low drag airframe with simple mechanical assembly to reduce weight and improve aerodynamics. The model had four engines, including two Williams FJ44 turbofans.[32][34] On 26 March 2013, Boeing was granted a patent for its swept-wing powered lift aircraft.[35]

In January 2014, Air Mobility Command, Air Force Materiel Command and the Air Force Research Lab were in the early stages of defining requirements for the C-X next generation airlifter program[36] to replace both the C-130 and C-17. The aircraft would be produced from the early 2030s to the 2040s.[37]

Operational history

[edit]

Military

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A USMC KC-130F Hercules performing takeoffs and landings aboard the aircraft carrier Forrestal in 1963. The aircraft is now displayed at the National Museum of Naval Aviation.

The first production batch of C-130A aircraft were delivered beginning in 1956 to the 463d Troop Carrier Wing at Ardmore AFB, Oklahoma, and the 314th Troop Carrier Wing at Sewart AFB, Tennessee. Six additional squadrons were assigned to the 322d Air Division in Europe and the 315th Air Division in the Far East. Additional aircraft were modified for electronics intelligence work and assigned to Rhein-Main Air Base, Germany while modified RC-130As were assigned to the Military Air Transport Service (MATS) photo-mapping division. The C-130A entered service with the U.S. Air Force in December 1956.[38]

In 1958, a U.S. reconnaissance C-130A-II of the 7406th Support Squadron was shot down over Armenia by four Soviet MiG-17s along the Turkish-Armenian border during a routine mission.[39]

Australia became the first non-American operator of the Hercules with 12 examples being delivered from late 1958. The Royal Canadian Air Force became another early user with the delivery of four B-models (Canadian designation CC-130 Mk I) in October / November 1960.[40]

In 1963, a Hercules achieved and still holds the record for the largest and heaviest aircraft to land on an aircraft carrier.[41] During October and November that year, a USMC KC-130F (BuNo 149798), loaned to the U.S. Naval Air Test Center, made 29 touch-and-go landings, 21 unarrested full-stop landings and 21 unassisted take-offs on Forrestal at a number of different weights. The pilot, Lieutenant (later Rear Admiral) James H. Flatley III, USN, was awarded the Distinguished Flying Cross for his role in this test series. The tests were highly successful, but the aircraft was not deployed this way.[citation needed] Flatley denied that C-130 was tested for carrier onboard delivery (COD) operations, or for delivering nuclear weapons. He said that the intention was to support the Lockheed U-2, also being tested on carriers.[42] The Hercules used in the test, most recently in service with Marine Aerial Refueler Squadron 352 (VMGR-352) until 2005, is now part of the collection of the National Museum of Naval Aviation at NAS Pensacola, Florida.[43]

In 1964, C-130 crews from the 6315th Operations Group at Naha Air Base, Okinawa commenced forward air control (FAC; "Flare") missions over the Ho Chi Minh Trail in Laos supporting USAF strike aircraft. In April 1965 the mission was expanded to North Vietnam where C-130 crews led formations of Martin B-57 Canberra bombers on night reconnaissance/strike missions against communist supply routes leading to South Vietnam. In early 1966 Project Blind Bat/Lamplighter was established at Ubon Royal Thai Air Force Base, Thailand. After the move to Ubon, the mission became a four-engine FAC mission with the C-130 crew searching for targets and then calling in strike aircraft. Another little-known C-130 mission flown by Naha-based crews was Operation Commando Scarf (or Operation Commando Lava), which involved the delivery of chemicals onto sections of the Ho Chi Minh Trail in Laos that were designed to produce mud and landslides in hopes of making the truck routes impassable.[44]

In November 1964, on the other side of the globe, C-130Es from the 464th Troop Carrier Wing but loaned to 322d Air Division in France, took part in Operation Dragon Rouge, one of the most dramatic missions in history in the former Belgian Congo. After communist Simba rebels took white residents of the city of Stanleyville hostage, the U.S. and Belgium developed a joint rescue mission that used the C-130s to drop, air-land, and air-lift a force of Belgian paratroopers to rescue the hostages. Two missions were flown, one over Stanleyville and another over Paulis during Thanksgiving week.[45] The headline-making mission resulted in the first award of the prestigious MacKay Trophy to C-130 crews.[46][47]

In the Indo-Pakistani War of 1965, the No. 6 Transport Squadron of the Pakistan Air Force modified its C-130Bs for use as bombers to carry up to 20,000 pounds (9,100 kg) of bombs on pallets. These improvised bombers were used to hit Indian targets such as bridges, heavy artillery positions, tank formations, and troop concentrations, though they were largely unsuccessful.[48][49][50]

C-130 Hercules were used in the Battle of Kham Duc in 1968, when the North Vietnamese Army forced U.S.-led forces to abandon the Kham Duc Special Forces Camp.

In October 1968, a C-130Bs from the 463rd Tactical Airlift Wing dropped a pair of M-121 10,000 pounds (4,500 kg) bombs that had been developed for the massive Convair B-36 Peacemaker bomber but had never been used. The U.S. Army and U.S. Air Force resurrected the huge weapons as a means of clearing landing zones for helicopters and in early 1969 the 463rd commenced Commando Vault missions. Although the stated purpose of Commando Vault was to clear LZs, they were also used on enemy base camps and other targets.[51]

During the late 1960s, the U.S. was eager to get information on Chinese nuclear capabilities. After the failure of the Black Cat Squadron to plant operating sensor pods near the Lop Nur Nuclear Weapons Test Base using a U-2, the CIA developed a plan, named Heavy Tea, to deploy two battery-powered sensor pallets near the base. To deploy the pallets, a Black Bat Squadron crew was trained in the U.S. to fly the C-130 Hercules. The crew of 12, led by Col Sun Pei Zhen, took off from Takhli Royal Thai Air Force Base in an unmarked U.S. Air Force C-130E on 17 May 1969. Flying for six and a half hours at low altitude in the dark, they arrived over the target and the sensor pallets were dropped by parachute near Anxi in Gansu province. After another six and a half hours of low-altitude flight, they arrived back at Takhli. The sensors worked and uploaded data to a U.S. intelligence satellite for six months before their batteries failed. The Chinese conducted two nuclear tests, on 22 September 1969 and 29 September 1969, during the operating life of the sensor pallets. Another mission to the area was planned as Operation Golden Whip, but it was called off in 1970.[52] It is most likely that the aircraft used on this mission was either C-130E serial number 64-0506 or 64-0507 (cn 382-3990 and 382–3991). These two aircraft were delivered to Air America in 1964.[53] After being returned to the U.S. Air Force sometime between 1966 and 1970, they were assigned the serial numbers of C-130s that had been destroyed in accidents. 64-0506 is now flying as 62–1843, a C-130E that crashed in Vietnam on 20 December 1965, and 64-0507 is now flying as 63–7785, a C-130E that had crashed in Vietnam on 17 June 1966.[54]

The A-model continued in service through the Vietnam War, where the aircraft assigned to the four squadrons at Naha AB, Okinawa, and one at Tachikawa Air Base, Japan performed yeoman's service, including operating highly classified special operations missions such as the BLIND BAT FAC/Flare mission and Fact Sheet leaflet mission over Laos and North Vietnam. The A-model was also provided to the Republic of Vietnam Air Force as part of the Vietnamization program at the end of the war, and equipped three squadrons based at Tan Son Nhut Air Base. The last operator in the world is the Honduran Air Force, which is still flying one of five A model Hercules (FAH 558, c/n 3042) as of October 2009.[55] As the Vietnam War wound down, the 463rd Troop Carrier/Tactical Airlift Wing B-models and A-models of the 374th Tactical Airlift Wing were transferred back to the United States where most were assigned to Air Force Reserve and Air National Guard units.

U.S. Marines disembarking from C-130 transports at Da Nang Air Base on 8 March 1965.

Another prominent role for the B model was with the United States Marine Corps, where Hercules initially designated as GV-1s replaced C-119s. After Air Force C-130Ds proved the type's usefulness in Antarctica, the U.S. Navy purchased several B-models equipped with skis that were designated as LC-130s. C-130B-II electronic reconnaissance aircraft were operated under the SUN VALLEY program name primarily from Yokota Air Base, Japan. All reverted to standard C-130B cargo aircraft after their replacement in the reconnaissance role by other aircraft.[citation needed]

The C-130 was also used in the 1976 Entebbe raid in which Israeli commando forces performed a surprise operation to rescue 103 passengers of an airliner hijacked by Palestinian and German terrorists at Entebbe Airport, Uganda. The rescue force—200 soldiers, jeeps, and a black Mercedes-Benz (intended to resemble Ugandan Dictator Idi Amin's vehicle of state)—was flown over 2,200 nmi (4,074 km; 2,532 mi) almost entirely at an altitude of less than 100 ft (30 m) from Israel to Entebbe by four Israeli Air Force (IAF) Hercules aircraft without mid-air refueling (on the way back, the aircraft refueled in Nairobi, Kenya).[citation needed]

During the Falklands War (Spanish: Guerra de las Malvinas) of 1982, Argentine Air Force C-130s undertook dangerous re-supply night flights as blockade runners to the Argentine garrison on the Falkland Islands. They also performed daylight maritime survey flights. One was shot down by a Royal Navy Sea Harrier using AIM-9 Sidewinders and cannon. The crew of seven were killed. Argentina also operated two KC-130 tankers during the war, and these refueled both the Douglas A-4 Skyhawks and Navy Dassault-Breguet Super Étendards; some C-130s were modified to operate as bombers with bomb-racks under their wings.[56] The British also used RAF C-130s to support their logistical operations.[57]

USMC C-130T Fat Albert performing a rocket-assisted takeoff (RATO)

During the Gulf War of 1991 (Operation Desert Storm), the C-130 Hercules was used operationally by the U.S. Air Force, U.S. Navy, and U.S. Marine Corps, along with the air forces of Australia, New Zealand, Saudi Arabia, South Korea, and the UK. The MC-130 Combat Talon variant also made the first attacks using the largest conventional bombs in the world, the BLU-82 "Daisy Cutter" and GBU-43/B "Massive Ordnance Air Blast" (MOAB) bomb. Daisy Cutters were used to primarily clear landing zones and to eliminate mine fields. The weight and size of the weapons make it impossible or impractical to load them on conventional bombers. The GBU-43/B MOAB is a successor to the BLU-82 and can perform the same function, as well as perform strike functions against hardened targets in a low air threat environment.[citation needed]

C-130 Hercules performs a tactical landing on a dirt strip, North Carolina, U.S.

Since 1992, two successive C-130 aircraft named Fat Albert have served as the support aircraft for the U.S. Navy Blue Angels flight demonstration team. Fat Albert I was a TC-130G (151891) a former U.S. Navy TACAMO aircraft serving with Fleet Air Reconnaissance Squadron Three (VQ-3) before being transferred to the BLUES,[58] while Fat Albert II is a C-130T (164763).[59] Although Fat Albert supports a Navy squadron, it is operated by the U.S. Marine Corps (USMC) and its crew consists solely of USMC personnel. At some air shows featuring the team, Fat Albert takes part, performing flyovers. Until 2009, it also demonstrated its rocket-assisted takeoff (RATO) capabilities; these ended due to dwindling supplies of rockets.[60]

The AC-130 also holds the record for the longest sustained flight by a C-130. From 22 to 24 October 1997, two AC-130U gunships flew 36 hours nonstop from Hurlburt Field, Florida to Daegu International Airport, South Korea, being refueled seven times by KC-135 tanker aircraft. This record flight beat the previous record longest flight by over 10 hours and the two gunships took on 410,000 lb (190,000 kg) of fuel. The gunship has been used in every major U.S. combat operation since Vietnam, except for Operation El Dorado Canyon, the 1986 attack on Libya.[61]

During the invasion of Afghanistan in 2001 and the ongoing support of the International Security Assistance Force (Operation Enduring Freedom), the C-130 Hercules has been used operationally by Australia, Belgium, Canada, Denmark, France, Italy, the Netherlands, New Zealand, Norway, Portugal, Romania, South Korea, Spain, the UK, and the United States.[citation needed][62]

During the 2003 invasion of Iraq (Operation Iraqi Freedom), the C-130 Hercules was used operationally by Australia, the UK, and the United States. After the initial invasion, C-130 operators as part of the Multinational force in Iraq used their C-130s to support their forces in Iraq.[63]

Since 2004, the Pakistan Air Force has employed C-130s in the War in North-West Pakistan. Some variants had forward looking infrared (FLIR Systems Star Safire III EO/IR) sensor balls, to enable close tracking of militants.[64]

In 2017, France and Germany announced that they will build up a joint air transport squadron at Evreux Air Base, France, comprising ten C-130J aircraft. Six of these will be operated by Germany. Initial operational capability is expected for 2021 while full operational capability is scheduled for 2024.[65]

The Argentine Air Force has five C-130H aircraft that are part of a US-funded security assistance donation. The US has been leasing the aircraft to the Argentine Air Force through the Georgia Air National Guard since June 2023.[citation needed]

Deepwater Horizon Oil Spill

[edit]
A U.S. Air Force C-130 Hercules aircraft from the 910th Airlift Wing, Youngstown-Warren Air Reserve Station, Ohio, drops oil-dispersing chemicals into the Gulf of Mexico, 9 May 2010.

For almost two decades, the USAF 910th Airlift Wing's 757th Airlift Squadron and the U.S. Coast Guard have participated in oil spill cleanup exercises to ensure the U.S. military has a capable response in the event of a national emergency. The 757th Airlift Squadron operates the DOD's only fixed-wing Aerial Spray System which was certified by the EPA to disperse pesticides on DOD property to spread oil dispersants onto the Deepwater Horizon oil spill in the Gulf Coast in 2010.[66]

During the 5-week mission, the aircrews flew 92 sorties and sprayed approximately 30,000 acres with nearly 149,000 gallons of oil dispersant to break up the oil. The Deepwater Horizon mission was the first time the US used the oil dispersing capability of the 910th Airlift Wing—its only large area, fixed-wing aerial spray program—in an actual spill of national significance.[67] The Air Force Reserve Command announced the 910th Airlift Wing has been selected as a recipient of the Air Force Outstanding Unit Award for its outstanding achievement from 28 April 2010 through 4 June 2010.[68]

Hurricane Harvey (2017)

[edit]
Illinois Air National Guard crews assisting with Hurricane Harvey relief load supplies aboard a C-130

C-130s temporarily based at Kelly Field conducted mosquito control aerial spray applications over areas of eastern Texas devastated by Hurricane Harvey. This special mission treated more than 2.3 million acres at the direction of Federal Emergency Management Agency (FEMA) and the Texas Department of State Health Services (DSHS) to assist in recovery efforts by helping contain the significant increase in pest insects caused by large amounts of standing, stagnant water. The 910th Airlift Wing operates the Department of Defense's only aerial spray capability to control pest insect populations, eliminate undesired and invasive vegetation, and disperse oil spills in large bodies of water.[69]

The aerial spray flight also is now able to operate during the night with NVGs, which increases the flight's best case spray capacity from approximately 60 thousand acres per day to approximately 190 thousand acres per day. Spray missions are normally conducted at dusk and nighttime hours when pest insects are most active, the U.S. Air Force Reserve reports.[70]

Aerial firefighting

[edit]
A C-130E fitted with a MAFFS-1 dropping fire retardant.

In the early 1970s, Congress authorized the Modular Airborne Firefighting System (MAFFS), a joint operation between the U.S. Forest Service and the Department of Defense. MAFFS is roll-on/roll-off device that allows C-130s to be temporarily converted into a 3,000-gallon airtanker for fighting wildfires when demand exceeds the supply of privately contracted and publicly available airtankers.[71]

In the late 1980s, 22 retired USAF C-130As were removed from storage and transferred to the U.S. Forest Service, which then transferred them to six private companies to be converted into airtankers. One of these C-130s crashed in June 2002 while operating near Walker, California. The crash was attributed to wing separation caused by fatigue stress cracking and contributed to the grounding of the entire large aircraft fleet.[72] After an extensive review, US Forest Service and the Bureau of Land Management declined to renew the leases on nine C-130A over concerns about the age of the aircraft, which had been in service since the 1950s, and their ability to handle the forces generated by aerial firefighting.[citation needed]

More recently, an updated Retardant Aerial Delivery System known as RADS XL was developed by Coulson Aviation USA. That system consists of a C-130H/Q retrofitted with an in-floor discharge system, combined with a removable 3,500- or 4,000-gallon water tank. The combined system is FAA certified.[73] On 23 January 2020, Coulson's Tanker 134, an EC-130Q registered N134CG, crashed during aerial firefighting operations in New South Wales, Australia, killing all three crew members. The aircraft had taken off out of RAAF Base Richmond and was supporting firefighting operations during Australia's 2019–20 fire season.[74]

Variants

[edit]
C-130A of the South Vietnam Air Force
Bangladesh Air Force C-130B
C-130E of the Islamic Republic of Iran Air Force
United States Navy C-130T, 2013
A United States Coast Guard HC-130J
A Mexican Air Force C-130K
A U.S. JC-130 aircraft retrieving a reconnaissance satellite film capsule under parachute.
RAAF C-130J-30 at Point Cook, 2006

Significant military variants of the C-130 include:

C-130A
Initial production model with four Allison T56-A-11/9 turboprop engines. 219 were ordered and deliveries to the USAF began in December 1956.
C-130B
Variant with four Allison T56-A-7 engines. 134 were ordered and entered USAF service in May 1959.
C-130E
Same engines as the C-130B but with two 1,290 U.S. gal (4,900 L; 1,070 imp gal) external fuel tanks, and an increased maximum takeoff weight capability. Introduced in August 1962 with 389 were ordered.
C-130F/G
Variants procured by the U.S. Navy for Marine Corps refueling missions, and other support/transport operations.
C-130H
Identical to the C-130E but with more powerful Allison T56-A-15 turboprop engines. Introduced in June 1964 with 308 ordered.
C-130K
Designation for RAF Hercules C1/W2/C3 aircraft (C-130Js in RAF service are the Hercules C.4 and Hercules C.5)
C-130T
Improved variants procured by the U.S. Navy for Marine Corps for refueling and other support/transport operations.
C-130A-II Dreamboat
Early version Electronic Intelligence/Signals Intelligence (ELINT/SIGINT) aircraft[75]
C-130J Super Hercules
Tactical airlifter, with new engines, avionics, and updated systems
C-130B BLC
A one-off conversion of C-130B 58–0712, modified with a double Allison YT56 gas generator pod under each outer wing, to provide bleed air for all the control surfaces and flaps.[76]
AC-130A/E/H/J/U/W
Gunship variants
C-130D/D-6
Ski-equipped version for snow and ice operations United States Air Force / Air National Guard
CC-130E/H/J Hercules
Designation for Canadian Armed Forces / Royal Canadian Air Force Hercules aircraft.[77] U.S. Air Force used the CC-130J designation to differentiate the standard C-130J variant from the "stretched" C-130J (company designation C-130J-30). CC-130H(T) is the Canadian tanker variant of the KC-130H.[78]
C-130M
Designation used by the Brazilian Air Force for locally modified C-130H aircraft.[79]
DC-130A/E/H
USAF and USN Drone control
E-130J
Future USN TACAMO aircraft
EC-130
EC-130E/J Commando Solo – USAF / Air National Guard psychological operations version
EC-130E Airborne Battlefield Command and Control Center (ABCCC) – USAF procedural air-to-ground attack control, also provided NRT threat updates
EC-130E Rivet Rider – Airborne psychological warfare aircraft
EC-130H Compass Call – Electronic warfare and electronic attack.[80]
EC-130Q – USN TACAMO aircraft
EC-130V – Airborne early warning and control (AEW&C) variant used by USCG for counter-narcotics missions[81]
GC-130
Permanently grounded instructional airframes
HC-130
HC-130B/E/H – Early model combat search and rescue
HC-130P/N Combat King – USAF aerial refueling tanker and combat search and rescue
HC-130J Combat King II – Next generation combat search and rescue tanker
HC-130H/J – USCG long-range surveillance and search and rescue, USAFR Aerial Spray & Airlift
JC-130
Temporary conversion for flight test operations; used to recover drones and spy satellite film capsules.
KC-130F/R/T/J
United States Marine Corps aerial refueling tanker and tactical airlifter
LC-130F/H/R
USAF / Air National Guard – Ski-equipped version for Arctic and Antarctic support operations; LC-130F and R previously operated by USN
MC-130
MC-130E/H Combat Talon I/II – Special operations infiltration/extraction variant
MC-130W Combat Spear/Dragon Spear – Special operations tanker/gunship[82]
MC-130P Combat Shadow – Special operations tanker – all operational aircraft converted to HC-130P standard
MC-130J Commando II (formerly Combat Shadow II) – Special operations tanker Air Force Special Operations Command[83]
YMC-130H – Modified aircraft under Operation Credible Sport for second Iran hostage crisis rescue attempt
NC-130
Permanent conversion for flight test operations
PC-130/C-130-MP
Maritime patrol
RC-130A/S
Surveillance aircraft for reconnaissance
SC-130J Sea Herc
Proposed maritime patrol version of the C-130J, designed for coastal surveillance and anti-submarine warfare.[84][85]
TC-130
Aircrew training
VC-130H
VIP transport
WC-130A/B/E/H/J
Weather reconnaissance ("Hurricane Hunter") version for USAF / Air Force Reserve Command's 53d Weather Reconnaissance Squadron in support of the National Weather Service's National Hurricane Center
C-130(EM/BM) Erciyes
Turkey's Erciyes modernization program covers modernization of the avionics of C-130B/E variants of the aircraft. In scope of modernization the aircraft is equipped with Digital Cockpit (four-color Multifunctional Display with moving map capability-MFD), two Central Display Units (CDU) and two multifunction Central Control Computers compatible with international navigational requirements, as well as with a multifunction Mission Computer with high operational capability, Flight Management System (FMS), Link-16, Ground Mission Planning Unit compatible with the Air Force Information System, and display and lighting systems compatible with Night Vision Goggles. Other components such as GPS, indicator, anti-collision system, air radar, advanced military and civilian navigation systems, night-time invisible lighting for military missions, black box voice recorder, communication systems, advanced automated flight systems (military and civilian), systems enabling operation in the military network, digital moving map and ground mission planning systems are also included.[86]
B.L.8
(Thai: บ.ล.๘) Royal Thai Armed Forces designation for the C-130H.[87]
B.L.8A
(Thai: บ.ล.๘ก) Royal Thai Armed Forces designation for the C-130H-30.[87]
TP 84
Swedish Air Force designation for the C-130H

Operators

[edit]
Military operators of C-130 Hercules aircraft;
  Current operators
  Former operators
A Republic of China Air Force C-130H, 2011
A Philippine Air Force C-130H, 2021
A Royal New Zealand Air Force C-130H, 2019

Former operators

Accidents

[edit]

The C-130 Hercules has had a low accident rate in general. The Royal Air Force recorded an accident rate of about one aircraft loss per 250,000 flying hours over the last 40 years, placing it behind Vickers VC10s and Lockheed TriStars with no flying losses.[89] USAF C-130A/B/E-models had an overall attrition rate of 5% as of 1989 as compared to 1–2% for commercial airliners in the U.S., according to the NTSB, 10% for B-52 bombers, and 20% for fighters (F-4, F-111), trainers (T-37, T-38), and helicopters (H-3).[90]

Aircraft on display

[edit]

Argentina

[edit]

Australia

[edit]
  • C-130A RAAF A97-214 used by 36 Squadron from early 1959, withdrawn from use late 1978. Stored at RAAF Museum, RAAF Base Williams, Point Cook.[92] Airframe scrapped in February 2022. Cockpit section preserved and gifted to National Vietnam Veterans Museum, Phillip Island.[93]
  • C-130E RAAF A97-160 used by 37 Squadron from August 1966, withdrawn from use November 2000; to RAAF Museum, 14 November 2000, cocooned as of September 2005.[94]
  • C-130H A97-011 delivered in October 1978, withdrawn from use December 2012 to RAAF Museum, Point Cook where it is currently on display.[95]

Belgium

[edit]
  • C-130H Belgian Air Component tailnumber CH13 in service from 2009 until May 2021 is on display at the Beauvechain Air Base at the First Wing Historical Center.[96]

Brazil

[edit]

Canada

[edit]

Colombia

[edit]
  • C-130B FAC 1010 (serial number 3521) moved on 14 January 2016 to the Colombian Aerospace Museum in Tocancipá, Cundinamarca, for static display.[101]
  • C-130B FAC1011 (serial number 3585, ex 59–1535) preserved at the Colombian Air and Space Museum within CATAM AFB, Bogotá.[102]

Indonesia

[edit]
  • C-130B Indonesian Air Force A-1301 preserved at Sulaeman Airstrip, Bandung. Also occasionally used for Paskhas Training. The airplane is relocated to Air Force Museum in Yogyakarta in 2017.[103]

New Zealand

[edit]

Norway

[edit]
  • C-130H Royal Norwegian Air Force 953 was retired on 10 June 2007 and moved to the Air Force museum at Oslo Gardermoen in May 2008.[106]

Philippines

[edit]
  • L-100-20 4512 Philippine Air Force on display at Mactan Air Base aircraft park.[107]

Poland

[edit]
  • C-130E number 1503 (serial number 70-1272), formerly operated by Polish Air Force and stationed at 33rd Air Base, retired on 30 July 2024. It is currently on display at the Polish Air Force Museum in Dęblin.[108]

Saudi Arabia

[edit]
C-130H at the Royal Saudi Air Force Museum
  • C-130H RSAF 460 was operated by 4 Squadron Royal Saudi Air Force from December 1974 until January 1987. It was damaged in a fire at Jeddah in December 1989. Restored for ground training by August 1993. At Royal Saudi Air Force Museum, November 2002, restored for ground display by using a tail from another C-130H.[109]

United Kingdom

[edit]

United States

[edit]
C-130E at the Museum of Aviation
  • GC-130A, AF Ser. No. 55-037 used by the 773 TCS, 483 TCW, 315 AD, 374 TCW, 815 TAS, 35 TAS, 109 TAS, belly-landed at Duluth, Minnesota, April 1973, repaired; 167 TAS, 180 TAS, to Chanute Technical Training Center as GC-130A, May 1984; now displayed at Museum of Missouri Military History, Missouri National Guard Ike Skelton Training Center, Jefferson City, Missouri. Previously displayed at Octave Chanute Aerospace Museum, (former) Chanute AFB, Rantoul, Illinois until museum closed.[111][112]
  • C-130A, AF Ser. No. 56-0518 used by the 314 TCW, 315 AD, 41 ATS, 328 TAS; to Republic of Vietnam Air Force 435 Transport Squadron, November 1972; holds the C-130 record for taking off with the most personnel on board, during the evacuation of SVN, 29 April 1975, with 452. Returned to USAF, 185 TAS, 105 TAS; Flown to Little Rock AFB on 28 June 1989. It was converted to a static display at the LRAFB Visitor Center, Arkansas by Sept. 1989.[113]
  • C-130A, AF Ser. No. 57-0453 was operated from 1958 to 1991, last duty with 155th TAS, 164th TAG, Tennessee Air National Guard, Memphis International Airport/ANGB, Tennessee, 1976–1991, named "Nite Train to Memphis"; to AMARC in December 1991, then sent to Texas for modification into a replica of C-130A-II Dreamboat aircraft, AF Ser. No. 56-0528, shot down by Soviet fighters in Soviet airspace near Yerevan, Armenia on 2 September 1958, while on ELINT mission with loss of all crew, displayed in National Vigilance Park, National Security Agency grounds, Fort George Meade, Maryland.[114]
  • C-130B, AF Ser. No. 59-0528 was operated by 145th Airlift Wing, North Carolina Air National Guard; placed on static display at Charlotte Air National Guard Base, North Carolina in 2010.[115]
  • C-130D, AF Ser. No. 57-0490 used by the 61st TCS, 17th TCS, 139th TAS with skis, July 1975 – April 1983; to MASDC, 1984–1985, GC-130D ground trainer, Chanute AFB, Illinois, 1986–1990; When Chanute AFB closed in September 1993, it moved to the Octave Chanute Aerospace Museum (former Chanute AFB), Rantoul, Illinois. In July 1994, it moved to the Empire State Aerosciences Museum, Schenectady County Airport, New York, until placed on the gate at Stratton Air National Guard Base in October 1994.[116]
  • NC-130B, AF Ser. No. 57-0526 was the second B model manufactured, initially delivered as JC-130B; assigned to 6515th Organizational Maintenance Squadron for flight testing at Edwards AFB, California on 29 November 1960; turned over to 6593rd Test Squadron's Operating Location No. 1 at Edwards AFB and spent next seven years supporting Corona Program; "J" status and prefix removed from aircraft in October 1967; transferred to 6593rd Test Squadron at Hickam AFB, Hawaii and modified for mid-air retrieval of satellites; acquired by 6514th Test Squadron at Hill AFB, Utah in Jan. 1987 and used as electronic testbed and cargo transport; aircraft retired January 1994 with 11,000+ flight hours and moved to Hill Aerospace Museum at Hill AFB by January 1994.[117]
  • C-130E, AF Ser. No. 62-1787, on display at the National Museum of the United States Air Force, Wright-Patterson AFB, Ohio, was flown to the museum on 18 August 2011. One of the greatest feats of heroism during the Vietnam War involved the C-130E, call sign "Spare 617".[N 2] The C-130E attempted to airdrop ammunition to surround South Vietnamese forces at An Loc, Vietnam. Approaching the drop zone, Spare 617 received heavy enemy ground fire that damaged two engines, ruptured a bleed air duct in the cargo compartment, and set the ammunition on fire. Flight engineer TSgt Sanders was killed, and navigator 1st Lt Lenz and co-pilot 1st Lt Hering were both wounded. Despite receiving severe burns from hot air escaping from the damaged air bleed duct, loadmaster TSgt Shaub extinguished a fire in the cargo compartment, and successfully jettisoned the cargo pallets, which exploded in mid-air. Despite losing a third engine on the final approach, pilot Capt Caldwell landed Spare 617 safely. For their actions, Caldwell and Shaub received the Air Force Cross, the U.S. Air Force's second highest award for valor. TSgt Shaub also received the William H. Pitsenbarger Award for Heroism from the Air Force Sergeants Association.[118]
  • KC-130F, USN/USMC BuNo 149798 used in tests in October–November 1963 by the U.S. Navy for unarrested landings and unassisted take-offs from the carrier USS Forrestal (CV-59), it remains the record holder for largest aircraft to operate from a carrier flight deck, and carried the name "Look Ma, No Hook" during the tests. Retired to the National Museum of Naval Aviation, NAS Pensacola, Florida in May 2003.[119]
  • C-130G, USN/USMC BuNo 151891; modified to EC-130G, 1966, then testbed for EC-130Q TACAMO in 1981, then changed to TC-130G and used by Fleet Air Reconnaissance Squadron Three (VQ-3) for flight proficiency (bounce bird). In early 1991 it was transferred to AMMARG Davis-Monthan AFB Tucson, AZ. In May 1991 it was assigned as the U.S. Navy's Blue Angels USMC support aircraft, serving as "Fat Albert Airlines" from 1991 to 2002. Retired to the National Museum of Naval Aviation at NAS Pensacola, Florida in November 2002 where it remains on outside static display reflecting the BLUES colors.[58]
  • C-130E, AF Ser. No. 64-0525 was on display at the 82nd Airborne Division War Memorial Museum at Fort Bragg, North Carolina. The aircraft was the last assigned to the 43rd AW at Pope AFB, North Carolina before retirement from the USAF.[120]
  • C-130E-LM, AF Ser. No. 64-0533 – Taken in December 1964 by 314th Troop Carrier Wing, Sewart AFB, TN. Last assigned to 37th Airlift Squadron, Rhein-Main AB, Germany. Transferred to Elmendorf AFB for display, May 2004. Marked as 53-2453.[121]
  • C-130E, AF Ser. No. 69-6579 operated by the 61st TAS, 314th TAW, 50th AS, 61st AS; at Dyess AFB as maintenance trainer as GC-130E, March 1998; to Dyess AFB Linear Air Park, January 2004.[122]
  • MC-130E Combat Talon I, AF Ser. No. 64-0567, unofficially known as "Wild Thing". It transported captured Panamanian dictator Manuel Noriega in 1989 during Operation Just Cause and participated in Operation Eagle Claw, the unsuccessful attempt to rescue U.S. hostages from Iran in 1980. Wild Thing was also the first fixed-wing aircraft to employ night-vision goggles. On display at Hurlburt Field, in Florida.[123]
  • C-130E, AF Ser. No. 69-6580 operated by the 61st TAS, 314th TAW, 317th TAW, 314th TAW, 317th TAW, 40th AS, 41st AS, 43rd AW, retired after center wing cracks were detected in April 2002; to the Air Mobility Command Museum, Dover AFB, Delaware on 2 February 2004.[122]
  • C-130E, AF Ser. No. 70-1269 was used by the 43rd AW and is on display at the Pope Air Park, Pope AFB, North Carolina as of 2006.[124]
  • C-130H, AF Ser. No. 74-1686 used by the 463rd TAW; one of three C-130H airframes modified to YMC-130H for an aborted rescue attempt of Iranian hostages, Operation Credible Sport, with rocket packages blistered onto fuselage in 1980, but these were removed after the mission was canceled. Subsequent duty with the 4950th Test Wing, then donated to the Museum of Aviation at Robins AFB, Georgia, in March 1988.[125]
  • C-130H, AF Ser. No. 88-4401 operated by the Ohio 179th Airlift Wing has been retired and is on display at the MAPS Air Museum in North Canton, Ohio.[126]

Specifications (C-130H)

[edit]
C-130H Hercules flight deck
A Hercules deploying flares, sometimes referred to as Angel Flares due to the characteristic pattern
Cargo compartment of a Swedish Air Force C-130

Data from USAF C-130 Hercules fact sheet,[127] International Directory of Military Aircraft,[128] Complete Encyclopedia of World Aircraft,[129] and Encyclopedia of Modern Military Aircraft.[130]

General characteristics

  • Crew: 5 (2 pilots, CSO/navigator, flight engineer and loadmaster)
  • Capacity: 42,000 lb (19,000 kg) payload
    • C-130E/H/J cargo hold: length, 40 ft (12.19 m); width, 9 ft 11 in (3.02 m); height, 9 ft (2.74 m). Rear ramp: length, 123 in (3.12 m); width, 119 in (3.02 m)
    • C-130J-30 cargo hold: length, 55 ft (16.76 m); width, 9 ft 11 in (3.02 m); height, 9 ft (2.74 m). Rear ramp: length, 123 inches (3.12 m); width, 119 in (3.02 m)
    • 92 passengers or
    • 64 airborne troops or
    • 74 litter patients with 5 medical crew or
    • 6 pallets or
    • 2–3 Humvees or
    • 2 M113 armored personnel carriers
    • 1 CAESAR self-propelled howitzer
  • Length: 97 ft 9 in (29.79 m)
  • Wingspan: 132 ft 7 in (40.41 m)
  • Height: 38 ft 3 in (11.66 m)
  • Wing area: 1,745 sq ft (162.1 m2)
  • Airfoil: root: NACA 64A318; tip: NACA 64A412[131]
  • Empty weight: 75,800 lb (34,382 kg)
  • Max takeoff weight: 155,000 lb (70,307 kg)
  • Powerplant: 4 × Allison T56-A-15 turboprop engines, 4,590 shp (3,420 kW) each
  • Propellers: 4-bladed Hamilton Standard 54H60 constant-speed fully feathering reversible propellers, 13 ft 6 in (4.11 m) diameter [132]

Performance

  • Maximum speed: 320 kn (370 mph, 590 km/h) at 20,000 ft (6,100 m)
  • Cruise speed: 292 kn (336 mph, 541 km/h)
  • Range: 2,050 nmi (2,360 mi, 3,800 km)
  • Ferry range: 3,995 nmi (4,597 mi, 7,399 km)
  • Service ceiling: 33,000 ft (10,000 m) empty[133]
23,000 ft (7,000 m) with 42,000 lb (19,000 kg) payload
  • Rate of climb: 1,830 ft/min (9.3 m/s)
  • Takeoff distance: 3,586 ft (1,093 m) at 155,000 lb (70,307 kg) max gross weight;[130]
1,400 ft (427 m) at 80,000 lb (36,287 kg) gross weight[134]

Avionics

See also

[edit]

Related development

Aircraft of comparable role, configuration, and era

Related lists

Notes

[edit]

References

[edit]

Sources

[edit]
  • Borman, Martin W. Lockheed C-130 Hercules. Marlborough, UK: Crowood Press, 1999. ISBN 978-1-86126-205-9.
  • Diehl, Alan E., PhD, Former Senior USAF Safety Scientist. Silent Knights: Blowing the Whistle on Military Accidents and Their Cover-ups. Dulles, Virginia: Brassey's Inc., 2002. ISBN 1-57488-544-8.
  • Donald, David, ed. "Lockheed C-130 Hercules". The Complete Encyclopedia of World Aircraft. New York: Barnes & Noble Books, 1997. ISBN 0-7607-0592-5.
  • Eden, Paul. "Lockheed C-130 Hercules". Encyclopedia of Modern Military Aircraft. London: Amber Books, 2004. ISBN 1-904687-84-9.
  • Frawley, Gerard. The International Directory of Military Aircraft, 2002/03. Fyshwick, ACT, Australia: Aerospace Publications Pty Ltd, 2002. ISBN 1-875671-55-2.
  • Olausson, Lars. Lockheed Hercules Production List 1954–2011. Såtenäs, Sweden: Self-published, 27th Edition March 2009. No ISBN.
  • Olausson, Lars (March 2010). Lockheed Hercules Production List 1954–2012 (28th ed.). Såtenäs, Sweden: Self-published.
  • "Pentagon Over the Islands: The Thirty-Year History of Indonesian Military Aviation". Air Enthusiast Quarterly (2): 154–162. n.d. ISSN 0143-5450.
  • Reed, Chris. Lockheed C-130 Hercules and Its Variants. Atglen, Pennsylvania: Schiffer Publishing, 1999. ISBN 978-0-7643-0722-5.
[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia
from Grokipedia
The Lockheed C-130 Hercules is a rugged, four-engine turboprop tactical airlifter designed and built originally by Lockheed Corporation for short takeoff and landing operations on unprepared runways. First on August 23, 1954, it entered U.S. Air Force service in December 1956 as the C-130A model, powered by Allison T56 turboprops, and quickly proved its utility in troop and cargo transport, paratroop drops, and medevac roles during conflicts like the Vietnam War. Its high-wing design, rear-loading ramp, and ability to carry up to 92 passengers or 45,000 pounds of cargo have enabled diverse missions, including aerial refueling (as KC-130), gunship operations (AC-130), and weather reconnaissance (WC-130). Over 2,700 variants have been produced since inception, marking the longest continuous production run in history, with the C-130J Super —the current model featuring upgraded engines, , and digital controls—still in active manufacturing and delivery. Operated by more than 70 countries, the platform has logged millions of flight hours in , disaster relief, and , setting 54 world records for speed, , and altitude in its class. Despite its age, ongoing upgrades like extended-service-life ensure relevance, underscoring a prioritizing reliability and adaptability over rapid obsolescence.

Origins and Development

Background and Requirements

The United States Air Force's experiences during the (1950–1953) exposed critical shortcomings in its tactical transport fleet, particularly the inability of piston-engine aircraft like the to reliably operate from short, unprepared airstrips amid mountainous and rugged terrain. These limitations hampered the rapid delivery of troops, supplies, and equipment to forward areas, underscoring the need for a more versatile assault transport capable of supporting ground operations with minimal infrastructure. On February 2, 1951, the USAF's Tactical Air Command issued a General Operational Requirement (GOR) for a new medium transport aircraft designed specifically for tactical assault roles, including troop and cargo airdrops, medevac, and logistics in combat zones. The specification prioritized short takeoff and landing (STOL) performance on rough fields, a rear-loading cargo ramp for rapid on-offloading, four turboprop engines for enhanced reliability over reciprocating types, and overall ruggedness to withstand frontline conditions without extensive maintenance. This requirement targeted a capacity sufficient for 64 paratroopers or equivalent cargo, operational flexibility across diverse environments, and integration with emerging turboprop technology to achieve higher speeds and altitudes than predecessors. Lockheed's response, the Model 82, was selected in mid-1951 after evaluation of proposals from , Douglas, Fairchild, and others, leading to contracts for prototype development emphasizing simplicity, low-speed handling, and field adaptability.

Design Phase and Prototyping

In response to limitations observed during the , where transports like the Fairchild C-119 struggled with short, unprepared airstrips and required excessive maintenance, the U.S. Air Force issued a requirement in early 1951 for a new medium tactical capable of delivering troops and cargo over medium distances to austere fields. The specification demanded a capacity for 92 infantrymen or 64 paratroopers, a combat radius of 1,100 nautical miles, short takeoff and landing performance from runways as short as 3,000 feet, and the ability to operate with one engine inoperative. Lockheed Aircraft Corporation, under the leadership of preliminary design engineer Willis Hawkins, proposed the Model 82 design, emphasizing simplicity, rough-field capability, and versatility; despite initial skepticism from Kelly Johnson, who favored jet propulsion, the proposal incorporated four emerging engines for their superior low-speed torque and reliability over rough terrain. The design phase prioritized first-principles engineering for operational realism, including a high-mounted for enhanced propeller clearance and obstacle avoidance during steep approaches, a rear roll-on/roll-off ramp for rapid vehicle loading, and a cargo floor rated for 300 pounds per square foot to handle heavy pallets or . Hawkins' team, including engineers like Art Flock and Dick Pulver, integrated 23 cockpit windows for pilot visibility in low-altitude maneuvers and selected —initially three-bladed on prototypes, later upgraded to four-bladed for efficiency. Turboprops were chosen over jets for their surplus power margins, enabling short ground rolls of approximately 855 feet and sustained performance from unprepared strips, addressing causal gaps in prior designs reliant on smoother bases. The U.S. awarded Lockheed a contract on July 2, 1951, to build two YC-130 prototypes at a cost reflecting the era's emphasis on rapid development amid threats. Prototyping proceeded swiftly at Lockheed's Burbank facility, with the first YC-130 (serial 53-3397) featuring the core airframe at 97.8 feet long and a 132.6-foot , powered by four Allison T56-A-1A engines each producing 3,750 shaft horsepower. Construction focused on modularity for field repairs, with the pressurized cargo hold designed for quick reconfiguration between troop and freight roles. The occurred on August 23, 1954, departing Lockheed Air Terminal in , for , validating the characteristics and turboprop stability under test pilot Stanley Beltz. The second followed for expanded testing, confirming the design's ability to meet USAF thresholds for delivery in contested environments, though minor refinements like upgrades were incorporated post-flight to optimize climb rates and . These prototypes directly informed production, demonstrating the aircraft's causal advantages in real-world over competitors' offerings.

Initial Production and Early Variants

The first production Lockheed C-130A Hercules, designated as the initial operational variant, conducted its maiden flight on April 7, 1955, from Lockheed's Marietta, Georgia facility, following the prototype YC-130's initial test flights the previous year. Powered by four Allison T56-A-9 engines each delivering 3,750 shaft horsepower, the C-130A emphasized short takeoff and landing () capabilities, with a of 124,000 pounds and the ability to operate from unprepared runways as short as 3,000 feet. Deliveries to the commenced in December 1956, marking the aircraft's entry into active service, with 219 units ultimately produced to fulfill initial tactical airlift requirements for troop and cargo transport in diverse environments. Early enhancements addressed performance limitations observed in operational testing, leading to the C-130B variant's introduction in 1959. This model upgraded to more powerful and reliable Allison T56-A-7 turboprops, each rated at 4,050 shaft horsepower, which improved climb rates and hot-and-high altitude operations without altering the airframe's core dimensions or characteristics. The C-130B entered U.S. Air Force service in May 1959, enabling expanded roles in intratheater and serving as a bridge to further refinements. The C-130E, rolled out in , built directly on the B model's improvements but incorporated structural reinforcements, auxiliary internal tanks, and two 1,300-gallon external wing-mounted tanks, boosting range to approximately 2,370 nautical miles and raising to 155,000 pounds. These modifications enhanced endurance for longer missions, such as aerial delivery of up to 42,000 pounds of or 92 passengers, while maintaining compatibility with austere fields; production emphasized rapid scalability to meet escalating demand during the early era. Together, the A, B, and E formed the foundational production series, with over 1,200 units built by the mid-1960s, prioritizing ruggedness and versatility over speed or payload extremes compared to contemporary jet transports.

Advanced Variants and Upgrades

Core Military Variants

The core military variants of the Lockheed C-130 consist of the C-130A, C-130B, C-130E, and C-130H, designed primarily for tactical operations including troop transport, delivery, and airdrops from austere fields. These models feature a high-wing configuration with four engines, rear-loading ramp, and short takeoff and landing capabilities, enabling operations on runways as short as 3,000 feet. The C-130A, the initial production variant, entered service in December 1956 equipped with four Allison T56-A-1A engines each producing 3,750 shaft horsepower and three-bladed propellers. It demonstrated exceptional short-field performance, achieving takeoff in 800 feet, and could carry up to 92 passengers or equivalent cargo. A total of 231 C-130A were delivered. Introduced in November 1958, the C-130B incorporated improvements over the A model, including more powerful Allison T56-A-7 engines rated at 4,050 shaft horsepower, strengthened for higher gross weight, and increased fuel capacity for extended range. These enhancements improved aerodynamics and overall tactical performance while retaining the core airlift mission. Lockheed delivered 230 C-130B aircraft. The C-130E, entering service in June 1961, extended the B model's capabilities with additional internal fuel tanks for greater range and payload, supporting longer missions and larger airdrops of troops or equipment. It maintained the T56-A-7A engines and featured enhanced for improved . Production totaled 491 units. First delivered in March 1965, the C-130H represented a major upgrade with Allison T56-A-15 engines delivering 4,650 shaft horsepower, advanced including better and instrumentation, and higher reliability through redesigned components. This variant achieved a service ceiling of 23,000 feet with a 42,000-pound and became the most numerous, with 1,202 delivered. All variants share dimensions of 97 feet 9 inches in , 132 feet 7 inches , and 38 feet 10 inches height, with a of 155,000 pounds.
VariantIntroductionEngines (shp each)Key ImprovementsProduction Delivered
C-130ADec 19564 × T56-A-1A (3,750)Short-field capability, basic tactical lift231
C-130BNov 19584 × T56-A-7 (4,050)Stronger wings, more fuel230
C-130EJun 19614 × T56-A-7A (4,050)Extended range/payload491
C-130HMar 19654 × T56-A-15 (4,650)Upgraded , power1,202

Special Mission and Export Adaptations

The C-130 supports a wide array of special mission configurations, leveraging its rugged design for roles beyond standard airlift, such as , (CSAR), operations, and electronic warfare. The KC-130 tanker variant, operated primarily by the U.S. Marine Corps, extends mission range through underwing fuel pods and a refueling boom or systems compatible with helicopters and jets; the KC-130J incorporates upgraded and engines for improved efficiency in tactical refueling. Similarly, the HC-130 series serves CSAR duties with extended-range fuel tanks, detection systems, and the ability to refuel helicopters mid-flight, as seen in the HC-130J variant flown by the U.S. for over-water rescues. Gunship adaptations, exemplified by the AC-130 family, transform the C-130 into a heavily armed, sensor-equipped platform for and armed reconnaissance, featuring side-firing cannons (typically 30mm and 105mm in later models), precision-guided munitions, and advanced targeting sensors like FLIR and for nighttime operations. Initial AC-130 conversions began in the mid-1960s for Vietnam-era missions, with ongoing upgrades emphasizing capability and . Electronic warfare variants, such as the EC-130H Compass Call, employ jamming pods and electronic attack systems to disrupt enemy communications and , while the EC-130J Solo broadcasts psychological operations or information warfare signals from high-power transmitters. The C-130J-SOF configuration further enables forces with integrated electro-optical/ sensors, enhanced electrical generation (up to 90 kVA), and provisions for , precision strikes, or infiltration/exfiltration support. Export adaptations of the C-130 often incorporate customer-specific modifications to align with national requirements, including alternative engines, suites, or mission kits while retaining the core versatility. Over 2,600 C-130s have been delivered to more than 70 operators worldwide, with variants like the C-130H and C-130J tailored for foreign air forces through integration of local s, defensive aids, or equipment. For instance, export models for nations such as and feature enhanced for regional operations, while some recipients adapt airframes for airborne early warning with palletized systems or tanker roles akin to the KC-130. These customizations prioritize with allied forces and compliance with export regulations, such as reduced-sensitivity or non-U.S. weapon integrations, ensuring operational effectiveness in diverse theaters without compromising the platform's short-field performance.

C-130J Super Hercules and Modern Enhancements

The C-130J Super Hercules represents a major redesign of the original C-130 airframe, incorporating new Rolls-Royce AE 2100D3 turboprop engines, a digital glass cockpit, and upgraded avionics systems. Development began in the early 1990s as Lockheed sought to modernize the Hercules fleet amid competition from newer transport aircraft, with the prototype's first flight occurring on April 5, 1996, at Marietta, Georgia. Initial operational capability was achieved in June 1998 with the Royal Air Force, followed by delivery to the U.S. Air Force in 1999. Over 500 C-130J and derivative models have been produced as of 2024, with manufacturing ongoing at Lockheed Martin's Marietta facility. Compared to the C-130H, the C-130J offers enhanced performance through its more powerful engines delivering 4,700 shaft horsepower each—versus the C-130H's Allison T56-A-15 engines at approximately 4,591 shp—and composite six-bladed propellers, enabling a 21% increase in maximum speed to 417 knots, a 40% greater range, and 41% shorter takeoff distance. It requires a reduced crew of three (pilot, co-pilot, and loadmaster), eliminating the need for a navigator due to integrated GPS and inertial navigation systems. Fuel efficiency improvements allow for up to 15% lower operating costs, while maximum takeoff weight reaches 164,000 pounds, supporting payloads of up to 46,700 pounds in the extended-fuselage C-130J-30 variant. Modern enhancements to the C-130J include Block Upgrade 8.1, which integrates advanced such as larger multi-function displays, improved data links, and enhanced threat detection for special operations variants like the MC-130J. Since 2009, all new-production C-130Js feature an Enhanced Service Life center wing box, extending structural lifespan by addressing fatigue from high-cycle operations. Additional upgrades encompass Communications, , and Identification (CNI) software improvements for better and mission flexibility across variants. The C-130J-SOF variant further incorporates electro-optical/ sensors and upgraded generators for , , and roles. These modifications sustain the platform's relevance in contested environments, with ongoing sustainment programs ensuring compatibility with evolving tactical requirements.

Recent Upgrades and Future Prospects

The C-130J Super Hercules incorporates Rolls-Royce AE 2100D3 engines delivering 4,700 shaft horsepower each, along with six-bladed composite propellers, enabling a 15-20% increase in maximum speed and significantly reduced operating costs compared to earlier C-130 variants. In June 2025, reported that structural testing confirmed the C-130J's lifespan exceeds initial estimates by nearly 40%, approaching twice the original design life of 40,000 flight hours, supporting extended fleet viability without major airframe redesigns. Modernization efforts for legacy C-130H models have included upgrades, redesigned outer for improved , and enhanced radar systems, as implemented in contracts for operators like in 2025. The U.S. accepted its 18th HC-130J variant on January 30, 2025, featuring integrated digital flight stations and multifunction displays for long-range surveillance missions. Specialized upgrades, such as the redesignation of the E-130J as Phoenix II in October 2024, introduce secure communications enhancements for nuclear command missions. However, some proposed enhancements for U.S. Air Force C-130Hs, including eight-bladed NP2000 propellers promising up to 20% thrust increase and 984-foot shorter takeoff distances, were curtailed in 2025 due to budgetary constraints. Looking ahead, the C-130 platform is projected to remain operational for decades, with U.S. assessments in 2024 highlighting ongoing engine efficiency gains, propeller advancements, and weight reductions to sustain its tactical role into the mid-21st century. Production of the C-130J continues, with deliveries scheduled for new operators including Mexico's first unit in November 2028, underscoring global demand for its short-takeoff capabilities and mission adaptability. The Block Upgrade program, encompassing incremental powerplant and improvements, positions the aircraft for integration with like advanced sensors, without indications of near-term replacement by competing designs.

Operational History

Military Deployments and Combat Roles

The C-130 Hercules entered combat service during the , where it performed tactical airlift operations from 1962 to 1970, delivering up to 15 tons of payload including troops, supplies, and ammunition to forward bases on unprepared airstrips. Its short takeoff and landing capabilities enabled support for isolated outposts, such as the air-drop of supplies to South Vietnamese forces at An Loc on May 3, 1972, amid intense ground fighting. Additionally, C-130s conducted medical evacuations and cargo resupply under fire, with variants adapted for low-level night operations to evade anti-aircraft threats. A specialized role emerged with the AC-130 variant, developed from the C-130 to provide and . First deployed in September 1967 over and , AC-130s used side-firing 20mm cannons, 40mm Bofors guns, and 105mm howitzers to destroy over 10,000 enemy trucks along the by war's end, while offering life-saving to ground troops. The first sortie occurred on September 27, 1967, under Project Gunship II, replacing less capable AC-47s with enhanced endurance for prolonged orbiting missions. In subsequent conflicts, C-130s supported Operations Desert Shield and Desert Storm in 1990-1991, conducting intratheater of forces and logistics across the theater, including resupply from bases in to forward areas in and . AC-130 gunships participated in highway interdiction, targeting retreating Iraqi convoys on the "" in February 1991 to disrupt armored advances. During the Iraq and campaigns from 2001 onward, over 140 C-130s were deployed for tactical , including airdrops, , and resupply, with MC-130 variants enabling infiltration and exfiltration of forces in austere terrain. These roles underscored the platform's adaptability for combat air mobility, often operating from dirt strips under threat of small arms and MANPADS fire.

Humanitarian Aid and Disaster Response

The Lockheed C-130 Hercules facilitates and through its capacity for tactical , including airdrops of up to 42,000 pounds (19,051 kilograms) of cargo and operations from rough, dirt strips as short as 3,000 feet (914 meters). This enables delivery of , , medical supplies, and personnel to areas inaccessible by larger or ground following natural disasters or conflicts. During Hurricane Katrina's landfall on August 29, 2005, C-130 Hercules aircraft from , , executed multiple sorties to airlift emergency supplies into devastated regions such as New Orleans, supporting evacuation and in flooded zones. In the response, starting January 13, U.S. deployed MC-130H Combat Talon II and standard C-130 variants to , transporting generators, vehicles, fuel bladders, food, and water to aid over 220,000 affected fatalities and millions displaced. For the 2017 Peru floods, two C-130s from arrived in on April 4 to ferry humanitarian cargo and personnel, augmenting local relief amid widespread inundation that displaced over 100,000 people. In April 2024, a U.S. C-130 delivered 20 pallets of oral rehydration fluid to , donated by non-governmental organizations to combat dehydration in ongoing crises. U.S. Central Command C-130s conducted precision airdrops over Gaza in early 2024, including over 38,000 meals ready-to-eat on March 2 along the coastline for civilian access, 30,016 meals on April 23 in northern areas, and more than 50,600 meal equivalents on , addressing acute shortages in conflict zones. These missions underscore the platform's role in computed delivery systems for palletized aid, often in coordination with allies like the Royal Jordanian Air Force.

Civilian Applications Including Firefighting

The Lockheed L-100 (also designated L-382) series represents the primary civilian adaptation of the C-130 airframe, certified for commercial operations without or armaments. First entering service in the late , the L-100 features a maximum of approximately 21,000 kg and operates effectively from short, unprepared runways, enabling access to remote sites lacking infrastructure. Stretched variants like the L-100-30 provide increased cargo volume for bulk freight. Operators such as Lynden deploy fleets of nine L-382G models worldwide for heavy-lift missions, including delivery of and supplies to austere locations in and the Pacific. These support industries requiring robust short-field performance, such as oil and gas exploration, where they transport oversized loads over challenging terrain. The contemporary LM-100J, derived from the C-130J Super Hercules, extends civilian utility with enhanced digital avionics and fuel efficiency, accommodating missions like oversized cargo haulage, aerial surveying, and for resource extraction. Its permits rapid reconfiguration for specialized tasks, including dispersant application during environmental incidents. C-130-derived platforms have facilitated responses by spraying chemical s from altitude, as demonstrated in operations supporting coastal cleanup efforts. Civilian firefighting applications leverage the C-130's endurance and payload for retardant delivery, often via converted surplus airframes operated by private contractors or state agencies. Coulson Aviation maintains a fleet of C-130H tankers equipped with the RADS-XXL system, which holds 4,000 US gallons and enables precise drops at low altitudes. These aircraft have conducted suppression missions in North America and Australia, with expansions including four ex-New Zealand Defence Force C-130Hs acquired in 2025 to bolster capacity. California's CAL FIRE, operating as a civilian entity, fields C-130H air tankers with similar 4,000-gallon RADS-XXL setups, marking the state as the first in the U.S. to own two dedicated platforms for wildland fire suppression upon unveiling the second in April 2025. Lockheed Martin's LM-100J FireHerc variant, certified for civil use and introduced in 2018, incorporates roll-on/roll-off tanks for rapid mission shifts, supporting prolonged low-speed loiter over fire zones and potential night operations via advanced sensors. Such configurations capitalize on the Hercules' turboprop reliability for repeated sorties in rugged conditions, dropping up to 3,000-4,000 gallons per pass to contain wildfires.

Global Operators

Active Military Operators

As of 2025, the Lockheed C-130 Hercules family remains in active across more than 60 countries, with approximately 1,100 aircraft operational worldwide. The operates the largest fleet, totaling around 593 aircraft distributed among the , Marine Corps, , and . The U.S. alone maintains about 460 C-130 variants for tactical airlift, primarily at bases including Dyess AFB in , Little Rock AFB in , Ramstein AB in , and Yokota AB in . The modern C-130J Super Hercules variant supports 28 operators in 23 nations, reflecting ongoing upgrades and new acquisitions. Notable examples include the Royal Australian 's C-130J-30 fleet for regional airlift; the Indian 's mix of C-130H and C-130J for high-altitude operations; and recent expansions such as Botswana's addition of C-130H aircraft in 2025 for enhanced transport capabilities. Mexico's integrated C-130J models in 2025 to modernize its alongside legacy types.
Branch/CountryApproximate Fleet SizePrimary Variants
460C-130H, C-130J
U.S. Marine Corps74KC-130J
25 (HC-130J) + 18 (HC-130H)HC-130J/H
Not specifiedC-130J-30
Not specifiedC-130H/J
Older C-130H and earlier models persist in service for cost-effective operations in diverse environments, while C-130J integrations continue in nations like and for joint exercises and logistics.

Civilian and Former Operators

The Lockheed L-100 series represents the primary freighter adaptation of the C-130 Hercules, with 114 units produced between 1964 and 1992 for commercial operations, including transport of oversized and heavy loads to remote or unprepared airstrips. Surplus C-130s have also been converted for use in roles such as bulk freight and specialized logistics. As of recent assessments, approximately 55 L-100 variants remain in commercial service worldwide. Lynden Air Cargo, based in , operates a fleet of L-100 aircraft for scheduled and charter cargo services, particularly in and remote international environments, with each capable of hauling up to 48,000 pounds of including vehicles and machinery. The company is modernizing its fleet through upgrades, with the first conversion scheduled for completion in 2026 to enhance reliability in demanding operations. Pallas Aviation serves as the launch operator for the LM-100J, a civil-certified derivative of the C-130J Super optimized for heavy-lift , managing at least three such under a 14 CFR Part 125 certificate since initial deliveries in 2019. Among former civilian operators, utilized three L-100 from 1966 to 1973 for short-haul domestic , marking the first commercial introduction of the stretched L-100-20 variant with an extended fuselage for increased capacity. Delta later modified its L-100-10 models to the L-100-20 configuration in 1968 to accommodate greater payloads.

Safety Record

Major Accidents and Incidents

On September 2, 1958, a U.S. Air Force C-130A-II reconnaissance variant (56-0528) strayed into Soviet airspace over Armenia and was shot down by four MiG-17 fighters, resulting in the deaths of all 17 crew members. On August 24, 1965, a U.S. Marine Corps KC-130F (149802) crashed into Kowloon Bay shortly after takeoff from Kai Tak Airport in Hong Kong, veering left due to loss of control and striking a seawall; the accident killed 59 of the 71 aboard, primarily Marines returning from rest and recuperation leave during the Vietnam War. On March 23, 1994, at , , an F-16D fighter collided mid-air with a U.S. C-130E during approach; the F-16 then struck a parked C-141 Starlifter on the ground, igniting a massive fuel-fed fire at the Green Ramp staging area, which killed 24 Army paratroopers and injured over 100 personnel preparing for a jump. The C-130E crew executed an without fatalities aboard the aircraft. On June 17, 2002, a civilian-contracted C-130A (N130HP, operating as Tanker 130) disintegrated in mid-air near Walker, California, while dropping over the Cannon Fire; the right separated at the attachment point due to cracking and inadequate inspections, killing all three crew members. The C-130 fleet has logged millions of flight hours worldwide, with non-combat rates reflecting its rugged design and versatility, though structural in older variants and operational stresses in austere environments have contributed to some losses.

Maintenance Challenges and Safety Improvements

The C-130 Hercules fleet, with many airframes exceeding 50,000 flight hours, faces significant maintenance challenges primarily due to structural in , a critical component susceptible to cracking from repeated stress cycles associated with short takeoff and landing operations. In , the U.S. grounded over 100 C-130 after routine inspections revealed cracks in the center wing box, prompting mandatory replacements to restore airworthiness. Fatigue propagation often originates at holes, exacerbated by the 's mission profile involving heavy payloads and rough-field landings, with some operators reporting cracks appearing earlier than life projections of 40,000-50,000 hours. Propeller maintenance has been another persistent issue, with improper procedures leading to damage and fleet-wide groundings. In November 2022, the U.S. identified that a decade-long practice of serial numbers on blades during inspections had caused micro-scratches, resulting in cracks and grounding more than 100 C-130H aircraft for replacements. Similar deficiencies contributed to the July 2017 crash of a U.S. Marine Corps KC-130T, where a corroded separated in flight due to inadequate depot-level overhaul at a U.S. facility, which failed to detect and repair despite visual inspections. These incidents highlight causal factors such as inconsistent and procedural errors in high-cycle components like the T56 . To address these challenges, operators have implemented enhanced inspection regimes and structural modifications, including non-destructive testing for wing box fatigue and mandatory propeller blade overhauls with improved corrosion detection protocols. Following the 2017 KC-130T incident, the U.S. revised depot maintenance standards, introducing stricter checks and to prevent recurrence of overlooked defects. The C-130J variant incorporates safety upgrades such as an enhanced cargo-handling system with electrically actuated restraints for precise control, reducing load-shift risks, alongside improved including Avoidance Systems (TCAS) and digital fuel quantity indication systems that minimize downtime from legacy analog failures. Retrofit programs for older models, including propeller blade replacements for pre-1971 units susceptible to cracking and center wing box life-extension kits, have extended fleet viability while prioritizing empirical fatigue data over projected lifespans.

Technical Specifications

C-130H Specifications

The C-130H variant incorporates upgraded Allison T56-A-15 engines providing enhanced power over the C-130E, along with improved and a redesigned outer for better performance in tactical airlift roles. Crew: 5 (two pilots, , flight , ). Capacity: Up to 92 passengers, 64 paratroopers, 74 litter patients with medical personnel, 6 pallets, or 16 container delivery system (CDS) bundles; cargo compartment measures 41 ft long, 123 in wide, and 9 ft high, with a rear loading ramp 119 in long by 119 in wide. Dimensions: Length 97 ft 9 in (29.8 m); 132 ft 7 in (40.4 m); height 38 ft 10 in (11.8 m). Weights: Empty weight approximately 75,000 lb (34,000 kg); maximum takeoff weight 155,000 lb (70,300 kg); maximum payload 42,000 lb (19,100 kg); maximum normal payload 36,500 lb (16,600 kg). Powerplant: 4 × Allison T56-A-15 turboprops, each rated at 4,591 shaft horsepower (3,430 kW), driving Hamilton Standard four-bladed propellers. Performance: Maximum speed 366 mph (318 kn; 589 km/h, Mach 0.52) at 20,000 ft; cruise speed approximately 348 mph (302 kn; 560 km/h); range 1,208 mi (1,050 nmi; 1,940 km) with maximum normal or 1,496 mi (1,300 nmi; 2,410 km) with 35,000 lb ; service ceiling 23,000 ft (7,000 m) with 42,000 lb ; 1,800 ft/min (9.1 m/s).

C-130J Specifications

The C-130J Super Hercules represents an advanced variant of the C-130 series, incorporating upgraded Rolls-Royce AE 2100D3 engines, each delivering 4,591 shaft horsepower, paired with six-bladed composite propellers for improved efficiency and performance over earlier models. This configuration enables a maximum cruise speed of 365 knots (675 km/h) and enhanced short-field capabilities, with landing distances as short as 3,000 feet (914 m) for the standard C-130J. The maintains the core high-wing design but features digital avionics and a reduced requirement, typically two pilots and a . Key general characteristics include a of 132 feet 7 inches (40.41 m), of 38 feet 10 inches (11.84 m), and length of 97 feet 9 inches (29.79 m) for the standard model, extending to 112 feet 9 inches (34.37 m) for the stretched C-130J-30 variant to accommodate greater cargo volume. stands at 164,000 pounds (74,389 kg) across variants, with capacities reaching 46,700 pounds (21,183 kg) for the C-130J-30 and up to 47,000 pounds (21,319 kg) for tanker or combat search-and-rescue configurations.
CategorySpecification (C-130J Standard)Specification (C-130J-30)
Maximum Payload42,000 lb (19,051 kg)46,700 lb (21,183 kg)
Range (with payload)2,360 nm (4,370 km) with 35,000 lb payload2,400 nm (4,440 km) with 35,000 lb payload
Service Ceiling28,000 ft (8,534 m) with 42,000 lb payload26,000 ft (7,925 m) with 44,500 lb payload
Airdrop CapacityUp to 42,000 lb low/high-velocityUp to 42,000 lb low/high-velocity
Performance data reflect operational testing, with the C-130J demonstrating superior climb rates and due to its all-digital and upgrades. Specialized variants like the KC-130J tanker support at rates exceeding 4,000 pounds (1,814 kg) per minute, while maintaining compatibility with austere airstrips.

Evaluation and Legacy

Achievements and Strategic Impact

The Lockheed C-130 Hercules represents a pinnacle of sustained production in , with over 2,700 units delivered since its first flight on August 23, 1954, and manufacturing continuing for the C-130J variant as of 2024. This endurance stems from its robust design, enabling operations from unprepared airstrips as short as 3,000 feet, which facilitated rapid adaptability across more than 40 variants for roles including troop transport, , gunship duties, and satellite recovery. Notable achievements include setting the record for the largest and heaviest to land on an during 1963 tests aboard , demonstrating its exceptional short-field performance under real-world constraints. The aircraft's versatility has profoundly shaped tactical airlift doctrine, allowing integration into diverse missions such as low-altitude terrain-following flights at 250 feet, drops, and combat search-and-rescue, thereby extending operational reach in austere environments where larger strategic airlifters like the C-5 Galaxy cannot operate. In humanitarian contexts, C-130s have delivered aid in disasters, including via retardant drops and response, underscoring their non-combat utility derived from inherent payload capacity up to 42,000 pounds. Over 2,500 Hercules variants operate across 69 nations, fostering among allies through shared and training networks. Strategically, the C-130 has amplified force projection by bridging tactical and interim strategic roles, such as transatlantic crossings without refueling in early models and supporting ground operations in conflicts from to via airdrops and resupply into contested zones. Its ability to perform as a "do-it-all" platform—evolving into variants like the AC-130 for —has made it a force multiplier, enabling smaller forces to sustain momentum in dispersed, high-threat scenarios where precision and reliability outweigh speed alone. This causal edge in accessibility and multi-role execution has influenced decisions globally, with the C-130J serving 26 operators in 22 countries as of 2024, perpetuating its relevance amid evolving threats.

Criticisms and Operational Limitations

Despite its versatility, the C-130 Hercules faces significant sustainment challenges due to the aging of its fleet, with many airframes exceeding 50 years of service, leading to reduced reliability, obsolescence of components, and diminished parts availability that complicate ongoing operations. Maintenance costs have escalated as a result, with legacy variants like the C-130T requiring extensive upkeep that lowers availability rates and imposes high operational expenses, prompting recommendations to retire older models in favor of more efficient alternatives. For instance, a flawed maintenance procedure documented propeller inspections by scratching blades, damaging over 100 C-130s between 2012 and 2022 and necessitating costly depot repairs. The aircraft's turboprop propulsion, while enabling short takeoff and landing () capabilities on unprepared runways, imposes inherent performance limitations compared to modern jet-powered transports. Its maximum speed of approximately 366 knots (417 mph) at sea level is substantially slower than competitors like the C-17 Globemaster III, which cruises at over 450 knots, restricting the C-130's role in time-sensitive strategic airlift and requiring more or staging for long-distance missions. suffers at higher speeds due to the propeller design optimized for low-altitude, short-haul tactical operations, contributing to higher per-hour operating costs—estimated at around $5,000 in the , adjusted upward with and part scarcities today—and four engines amplify maintenance burdens relative to twin-engine jets. In combat environments, the C-130's low-speed, low-altitude flight profile for tactical insertions exposes it to heightened vulnerabilities from ground-based threats such as man-portable air-defense systems (MANPADS) and anti-aircraft artillery, as evidenced by historical losses during operations in contested areas like where dozens were downed by enemy fire. Even upgraded variants like the AC-130 variant exhibit poor maneuverability, making evasion difficult without air superiority or escorts, and limiting persistent loiter times in high-threat zones without risking attrition. Early C-130J procurements drew criticism for delivering aircraft with deficiencies in cargo loading systems and structural constraints, leading to the accepting defective units at full price initially, which exacerbated lifecycle costs.

References

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