Beechcraft 1900 Beechliner

Les Beech 1900 & 1900D racontés par un contributeur de Wikipedia.FR Merci

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Le Beechcraft 1900 Beechliner est un avion de transport régional à turbopropulseurs de 19 places (de type C, D ou King Air ExecLiner pour les versions civiles ; C-12J pour sa version militaire).

La version initiale A n'a été produite qu'à trois exemplaires, dont un seul est encore en service au sein de l'Escuadrón de Ejecutivos 310 bolivien.

À fuselage agrandi, permettant la station debout des passagers, le Beechliner est également apparenté au Beech King Air.

Fabriqué à plus de 450 exemplaires par Raytheon Aircraft, le 1900D a été commercialisé à partir de 1991.

Beechcraft 1900 variante D

Le Beechcraft 1900 variante D est le seul petit turbopropulseur à permettre aux passagers de se lever dans la cabine, ce qui explique le fuselage agrandi.

Beech C-12J

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Le C-12J est un B 1900 C1 aussi bien dans l'US ARMY que dans l'USAF



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Beechcraft 1900 by Wikipedia.en

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The Beechcraft 1900 is a 19-passenger, pressurized twin-engine turboprop airplane manufactured by the Beechcraft Division of the Raytheon Company (now Hawker Beechcraft).

It was designed, and is primarily used, as a regional airliner.

It is also used as a freight aircraft, corporate transport, and by the United States military and other governments.

The aircraft is designed to carry passengers in all weather conditions from airports with relatively short runways.

It is capable of flying in excess of 600 miles (970 km), although few operators use its full-fuel range.

In terms of the number of aircraft built and its continued use by many passenger airlines and other users, it is one of the most popular 19-passenger airliners in history.

Development

The 1900 is Beechcraft's third regional airliner.

The Beechcraft Model 18 was a 6- to 11-passenger utility aircraft produced from 1937 to 1970, used by the military, airlines, charter operations, corporations for executive transport, and freight carriers.

The 15-passenger Beechcraft Model 99 Airliner was designed to replace the Beech 18, and was produced between 1966 and 1975, and from 1982 to 1986.

It was also commercially successful and remains in common use with freight airlines such as Ameriflight.

The Beechcraft 1900's design lineage began in 1949 with the Beechcraft Model 50 "Twin Bonanza", a 5 passenger, reciprocating engine utility aircraft designed for the U.S. Army.

A larger passenger cabin was added to the Twin Bonanza's airframe, and called the Model 65 "Queen Air." This aircraft was, in turn, further modified by adding turboprop engines and cabin pressurization, and named the Model 90 "King Air."

A stretched version of the King Air was later developed and designated the Model 200 "Super King Air". Beechcraft developed the Beechcraft 1900 directly from the Beechcraft Super King Air, in order to provide a pressurized commuterliner to compete with the Swearingen Metro and the British Aerospace Jetstream.

The 1900 first flew on September 3, 1982, with Federal Aviation Administration (FAA) certification awarded on November 22, 1983 under Special Federal Aviation Regulation (SFAR) 41C airworthiness standards

Like the 1900, the 1900C was certified under SFAR 41C, but the later 1900D version was certified to FAR Part 23 "Commuter Category" standards.

The 1900 entered service in February 1984, with the first ExecLiner corporate version delivered in 1985.

A total of 695 Beechcraft 1900 aircraft were built, making the airliner the best-selling 19-passenger airliner in history.

With market trends favoring larger 50- to 90-seat regional jets, Raytheon ended production of the Beechcraft 1900 in October 2002. Many airlines continue to fly the 1900.

Design

Since the 1900 is derived from the King Air, all 1900s share certain characteristics with that aircraft.

Cockpit controls and operations are similar to those of the King Air.

While Federal Aviation Regulations require two pilots for airline operations, the 1900 is designed and certificated for single-pilot operation in corporate or cargo settings, as is the King Air.

Propulsion

The 1900 is powered by two Pratt & Whitney Canada PT6A turboprop engines.

The 1900 and 1900C use two PT6A-65B engines, each flat rated at 1,100 shaft horsepower.

The 1900D uses two PT6A-67D engines, each rated at 1,279 shaft horsepower.

The propellers are manufactured by Hartzell, with four blades on each propeller. The blades are made from composite materials.

Jet A is the recommended fuel; however the engines are also approved for limited operations on other types of jet fuel or aviation-grade gasoline.

Performance

The 1900D cruises at about 285 knots (328 mph or 528 km/h) true airspeed. Ordinary trip lengths range from 100 to 600 miles (20 minutes to two hours), but with full fuel tanks, the aircraft is capable of flying well in excess of 1,000 nautical miles (1,900 km).

Airlines often prefer the 1900 over jet aircraft for shorter routes due to its fuel efficiency, and because trip times are not significantly longer on distances up to 300 miles (480 km).

The Beechcraft 1900 can operate safely on relatively short airstrips and it can take off and land on grass and rough runways.

The airplane is certified to fly up to an altitude of 25,000 feet (7,600 m) above mean sea level with its pressurized cabin.

It is designed to operate in most weather conditions, including icing conditions, and it is usually equipped with weather radar to help pilots avoid severe weather.

The aircraft can be fitted with an optional lavatory, using space otherwise available for passenger seating and cargo storage.

The Beechcraft 1900 is used by the FAA for its Airline Transport Pilot knowledge test section on operating and performance data. Pilots are tested on center of gravity calculations, takeoff and landing performance and en route fuel burn.

Variants

1900

The original design is known simply as the Beechcraft 1900.

It features two "airstair" passenger boarding doors: one near the tail of the aircraft much like the smaller King Airs, and a second at the front just behind the cockpit.

It has a small cargo door near the tail for access to the baggage compartment, which is behind the passenger compartment.

Only three airframes were built, with "UA" serial numbers of UA-1, UA-2, and UA-3. UA-1 and UA-2 are stored at a Beechcraft facility in Wichita, Kansas.

As of September 2006, UA-3 is in service with Bolivia's Ministry of National Defence in La Paz.

UA-3

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1900C

It immediately became clear that two airstair doors were redundant on an aircraft holding only 19 passengers. Beechcraft kept the front airstair, but eliminated the aft airstair door, installing an enlarged cargo door in its place.

The changed aircraft was renamed 1900C. Other than the redesigned door layout, the early 1900Cs were substantially similar to the original 1900s.

These were assigned serial numbers starting with the letters UB. A total of 74 UB version were built, many of which remain in service.

Aircraft in the UA and UB series employ a bladder-type fuel tank system in the wings.

Later 1900Cs use a "wet wing" fuel system: entire sections of the wing are sealed off for use as fuel tanks.

This design change allowed more fuel to be stored, substantially increasing the 1900C's range.

The wet wing 1900Cs were assigned serial numbers beginning with "UC."

These aircraft are also referred to as 1900C-1s.

The wet wings proved popular, and the UC is the most common version of the low-ceiling 1900, with 174 UC airframes built.

Raytheon manufactured six 1900C aircraft for use by the U.S. military.

These were assigned "UD" serial numbers, UD-1 through UD-6.