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Beechcraft Bonanza
The Beechcraft Bonanza is an American general aviation aircraft introduced in 1947 by Beech Aircraft Corporation of Wichita, Kansas. The six-seater, single-engined aircraft is still produced by Beechcraft and has been in continuous production longer than any other aircraft in history. More than 17,000 Bonanzas of all variants have been built, produced in both distinctive V-tail and conventional tail configurations; early conventional-tail versions were marketed as the Debonair.
At the end of World War II, two all-metal light aircraft emerged, the Model 35 Bonanza and the Cessna 195, that represented very different approaches to the premium end of the postwar civil-aviation market.[citation needed] With its high-wing, seven-cylinder radial engine, fixed tailwheel undercarriage, and roll-down side windows, the Cessna 195 was a continuation of prewar technology. The Bonanza, however, featured an easier-to-manage, horizontally opposed, six-cylinder engine, retractable tricycle undercarriage (although the nosewheel initially was not steerable, but castering)[verification needed] and low-wing configuration.
Designed by a team led by Ralph Harmon, the model 35 Bonanza was a relatively fast, low-wing, all-aluminum design, at a time when most light aircraft were still made of wood and fabric.[citation needed] The Model 35 featured retractable landing gear, and its signature V-tail (equipped with combination elevator-rudders called "ruddervators"). The prototype 35 Bonanza made its first flight on December 22, 1945, with the type receiving an airworthiness certificate on March 25, 1947. Production began that year. The first 30–40 Bonanzas produced had fabric-covered flaps and ailerons, after which those surfaces were covered with magnesium alloy sheet.
The Bonanza family eventually comprised three major variants:
The Model 33 Debonair was introduced in 1960 as a lower-priced model with more austere standard instrumentation, exterior equipment, paint schemes, and interior fabrics and trim than the more prestigious V-tail Bonanza. However, most Bonanza features were available as factory options on the Debonair, and by the mid 1960s, most Debonair buyers were ordering most or all of these options. Realizing this, Beechcraft dropped the Debonair name and most of the basic and seldom-ordered standard features with the introduction of the E33 in 1968.
Despite its name, the Twin Bonanza is a substantially wider and heavier aircraft that is mostly dissimilar to the single-engined Bonanza; the only major shared parts are the front fuselage sides, windows, and main cabin door. However, the Twin Bonanza had trouble competing with the similarly capable but substantially lighter Cessna 310 and Piper PA-23, so Beechcraft used the basic Bonanza fuselage and many other Bonanza parts to create the twin-engined Travel Air, which was later developed into the Baron.
The V-tail design gained a reputation as the "forked-tail doctor killer", due to crashes by overconfident wealthy amateur pilots, fatal accidents, and in-flight breakups. "Doctor killer" has sometimes been used to describe the conventional-tailed version, as well. However, a detailed analysis by the Aircraft Owners and Pilots Association of accident records for common single-engine retractable-gear airplanes in the United States between 1982 and 1989 found that the Bonanza had a slightly lower accident rate than other types in the study. Pilot error was cited in 73% of V-tail crashes and 83% of conventional-tail crashes, with aircraft-related causes accounting for 15% and 11% of crashes respectively. However, the study noted that the aircraft had an unusually high incidence of gear-up landings and inadvertent landing gear retractions on the ground, which were attributed to a non-standard gear-retraction switch on early models that is easily confused with the switch that operates the flaps. Models starting in 1984 use a more distinctive relocated landing-gear switch, augmented by "squat switches" in the landing gear that prevent its operation while compressed by the aircraft's weight, and a throttle position switch that prevents gear retraction at low engine power settings.
In 1982, the production of the V-tail Model 35 ended. In the late 1980s, repeated V-tail structural failures prompted the United States Department of Transportation and Federal Aviation Administration (FAA) to conduct extensive wind tunnel and flight tests, which proved that the V-tail did not meet type certification standards under certain conditions; the effort culminated with the issuance of an airworthiness directive to strengthen the tail, which significantly reduced the incidence of in-flight breakups. Despite this, Beech has long contended that most V-tail failures involve operations well beyond the aircraft's intended flight envelope. Subsequent analysis of National Transportation Safety Board (NTSB) accident records between 1962 and 2007 revealed an average of three V-tail structural failures per year, while the conventional-tailed Bonanza 33 and 36 suffered only eleven such failures in total during the same 45 years. Most V-tail failures involved flight under visual flight rules into instrument meteorological conditions, flight into thunderstorms, or airframe icing.
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Beechcraft Bonanza
The Beechcraft Bonanza is an American general aviation aircraft introduced in 1947 by Beech Aircraft Corporation of Wichita, Kansas. The six-seater, single-engined aircraft is still produced by Beechcraft and has been in continuous production longer than any other aircraft in history. More than 17,000 Bonanzas of all variants have been built, produced in both distinctive V-tail and conventional tail configurations; early conventional-tail versions were marketed as the Debonair.
At the end of World War II, two all-metal light aircraft emerged, the Model 35 Bonanza and the Cessna 195, that represented very different approaches to the premium end of the postwar civil-aviation market.[citation needed] With its high-wing, seven-cylinder radial engine, fixed tailwheel undercarriage, and roll-down side windows, the Cessna 195 was a continuation of prewar technology. The Bonanza, however, featured an easier-to-manage, horizontally opposed, six-cylinder engine, retractable tricycle undercarriage (although the nosewheel initially was not steerable, but castering)[verification needed] and low-wing configuration.
Designed by a team led by Ralph Harmon, the model 35 Bonanza was a relatively fast, low-wing, all-aluminum design, at a time when most light aircraft were still made of wood and fabric.[citation needed] The Model 35 featured retractable landing gear, and its signature V-tail (equipped with combination elevator-rudders called "ruddervators"). The prototype 35 Bonanza made its first flight on December 22, 1945, with the type receiving an airworthiness certificate on March 25, 1947. Production began that year. The first 30–40 Bonanzas produced had fabric-covered flaps and ailerons, after which those surfaces were covered with magnesium alloy sheet.
The Bonanza family eventually comprised three major variants:
The Model 33 Debonair was introduced in 1960 as a lower-priced model with more austere standard instrumentation, exterior equipment, paint schemes, and interior fabrics and trim than the more prestigious V-tail Bonanza. However, most Bonanza features were available as factory options on the Debonair, and by the mid 1960s, most Debonair buyers were ordering most or all of these options. Realizing this, Beechcraft dropped the Debonair name and most of the basic and seldom-ordered standard features with the introduction of the E33 in 1968.
Despite its name, the Twin Bonanza is a substantially wider and heavier aircraft that is mostly dissimilar to the single-engined Bonanza; the only major shared parts are the front fuselage sides, windows, and main cabin door. However, the Twin Bonanza had trouble competing with the similarly capable but substantially lighter Cessna 310 and Piper PA-23, so Beechcraft used the basic Bonanza fuselage and many other Bonanza parts to create the twin-engined Travel Air, which was later developed into the Baron.
The V-tail design gained a reputation as the "forked-tail doctor killer", due to crashes by overconfident wealthy amateur pilots, fatal accidents, and in-flight breakups. "Doctor killer" has sometimes been used to describe the conventional-tailed version, as well. However, a detailed analysis by the Aircraft Owners and Pilots Association of accident records for common single-engine retractable-gear airplanes in the United States between 1982 and 1989 found that the Bonanza had a slightly lower accident rate than other types in the study. Pilot error was cited in 73% of V-tail crashes and 83% of conventional-tail crashes, with aircraft-related causes accounting for 15% and 11% of crashes respectively. However, the study noted that the aircraft had an unusually high incidence of gear-up landings and inadvertent landing gear retractions on the ground, which were attributed to a non-standard gear-retraction switch on early models that is easily confused with the switch that operates the flaps. Models starting in 1984 use a more distinctive relocated landing-gear switch, augmented by "squat switches" in the landing gear that prevent its operation while compressed by the aircraft's weight, and a throttle position switch that prevents gear retraction at low engine power settings.
In 1982, the production of the V-tail Model 35 ended. In the late 1980s, repeated V-tail structural failures prompted the United States Department of Transportation and Federal Aviation Administration (FAA) to conduct extensive wind tunnel and flight tests, which proved that the V-tail did not meet type certification standards under certain conditions; the effort culminated with the issuance of an airworthiness directive to strengthen the tail, which significantly reduced the incidence of in-flight breakups. Despite this, Beech has long contended that most V-tail failures involve operations well beyond the aircraft's intended flight envelope. Subsequent analysis of National Transportation Safety Board (NTSB) accident records between 1962 and 2007 revealed an average of three V-tail structural failures per year, while the conventional-tailed Bonanza 33 and 36 suffered only eleven such failures in total during the same 45 years. Most V-tail failures involved flight under visual flight rules into instrument meteorological conditions, flight into thunderstorms, or airframe icing.