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Pilatus PC-21

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Pilatus PC-21

The Pilatus PC-21 is a turboprop-powered advanced trainer with a stepped tandem cockpit. It is manufactured by Pilatus Aircraft of Switzerland.

In November 1997 Pilatus flew a modified PC-7 Mk.II in order to test improvements for a prospective next generation turboprop trainer. As a result of these tests, Pilatus elected to fund the development of a new training system in November 1998; development of the new trainer, designated as the PC-21, formally started in January 1999. The PC-21 would be developed and certified as a completely new training system, aimed at meeting future military customers' specifications in terms of capability and life-cycle costs for the next three decades.

A key aim for the PC-21 was to allow jet aircraft pilots to perform the majority of their training using the type before converting to jet-powered types, allowing operators to make substantial savings. In order to achieve this aim, the new trainer was required to have an expanded performance envelope in terms of aerodynamics, cockpit equipment, flexibility, and ease of maintenance. In May 2002 Pilatus announced that it aimed for the PC-21 to capture 50% of the global trainer aircraft market between 2005 and 2030.

From the start of the aircraft's development, Pilatus aimed for the type to have a predictable cost profile over its full lifespan. To meet this goal, the firm chose to incorporate modern materials, an innovative design concept, and full-scale fatigue analysis. Additionally, accompanying the aircraft itself are integrated training systems to meet the pilot's needs; the full package offered by Pilatus includes synthetic training devices, computer-based training, and classroom instruction. As a result of greater training effectiveness, pilots can graduate with fewer total training hours, reaching the frontline faster and at lower cost. In addition to pilots, various prospective aircrew, such as navigators, weapons officers, and electronic warfare operators, can be trained using the type's embedded simulation/emulation system.

On 30 April 2002, the rollout of the first PC-21 prototype was performed at Pilatus' factory in Stans, Switzerland; this aircraft conducted its first flight on 1 July of the same year. In May 2003, Pilatus management formally green-lit the program to proceed to full development. On 7 June 2004, a second PC-21 prototype, the construction of which had been delayed to incorporate improvements learnt from assembling the first, made its maiden flight. In December 2004, Switzerland's Federal Office for Civil Aviation granted type certification for the PC-21; civil certification was attained despite it being a military aircraft as this permitted civil maintenance procedures to be used as well as allowing the aircraft to be supplied under private finance arrangements. Individual Swiss military certification for equipment such as ejection seats has been applied as necessary.

On 13 January 2005, the second of the two development aircraft crashed in Buochs, Switzerland, while conducting an aerobatic training flight; the accident resulted in the death of the pilot as well as injuring another person on the ground. In response to the accident, the other PC-21 was grounded for several weeks until Swiss authorities had established that there was no sign of technical malfunction. In August 2006, it was announced that crash investigators had concluded that pilot error had been a primary cause. In late August 2005, the first pre-series production PC-21 performed its maiden flight.

The Pilatus PC-21 is an advanced single-engine trainer aircraft; it is often referred to by Pilatus as being the "Twenty-first Century Trainer". The type can be applied for various training capacities, including basic flying training, advanced flight training, full mission management training, and embedded simulation/emulation. In order to perform these functions, the aircraft possesses a powerful, flexible, and cost-effective integrated training system; providing sufficient ease of use for inexperienced pilots while posing greater challenge to advanced pilots. According to Pilatus, upon product launch, the PC-21 possessed "superior aerodynamic performance when compared with any other turboprop trainer on the market".

The aircraft features a tandem-seating arrangement (student in front/instructor behind) in a bird strike-resistant glass canopy with allround vision. The cabin, which is pressurized, is equipped with an On-Board Oxygen Generation System (OBOGS), air conditioning, and Martin-Baker CH16C Zero-Zero ejection seats. The flight controls, which are fully balanced and harmonized, are optimized for ease of operation and overall effectiveness. An anti-g system is also present in order to minimize the effects of high g-forces experienced during tactical training and aerobatic maneuvers. Pilots are able to spend a greater amount of time concentrating on the aircraft's external situation and upon mission data inputs due to an ergonomic design approach, ease-of-use controls, and clear visual/system data displays. In addition, a full autopilot and civil flight management system are also present.

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