Learjet 35

The Learjet Model 35 and Model 36 are a series of American multi-role business jets and military transport aircraft manufactured by Learjet. When used by the United States Air Force they carry the designation C-21A.

The aircraft are powered by two Garrett TFE731-2 turbofan engines. Its cabin can be arranged for 6-8 passengers. The longer-range Model 36 has a shortened passenger area to provide more space in the aft fuselage for fuel tanks.

The engines are mounted in nacelles on the sides of the aft fuselage. The wings are equipped with single-slotted flaps. The wingtip fuel tanks distinguish the design from other aircraft having similar functions.

Learjet 35
Class Aircraft
Type Transport
Manufacturer Learjet
Production Period 1973 - 1994
Origin United States of America
Country Name Origin Year
United States of America 1973
Country Name Operational Year Retirement Year
Argentina View
Bolivia View
Brazil View
Chile View
Finland View
Japan View
Mexico View
Namibia View
Peru View
Saudi Arabia View
Switzerland View
Thailand (Siam) View
United Arab Emirates View
United States of America View
United States of America View
ManufacturerName Production From Production To Quantity
Learjet 1973 1994 738 View

The concept which became the LJ35 began as the Learjet 25BGF (with GF referring to "Garrett Fan"), a Learjet 25 with a then-new TFE731 turbofan engine mounted on the left side in place of the 25's General Electric CJ610 turbojet engine. This testbed aircraft first flew in May, 1971. As a result of the increased power and reduced noise of the new engine, Learjet further improved the design, and instead of being simply a variant of the 25, it became its own model, the 35.

Variants

  • Learjet 35
  • Learjet 35A
  • Learjet 36
  • Learjet 36A

Military variants

  • C-21A
  • EC-21A
  • PC-21A
  • RC-21A
  • U-36
  • R-21A
  • U-21A

In 1976 American professional golfer Arnold Palmer used a Learjet 36 to establish a new round-the-world class record of 22,894 miles (36990 km) completed in 57 hours 25 minutes 42 seconds.

Learjet 35s made the bulk of Escuadrón Fénix during the 1982 Falklands War mainly on diversion flights.

Production on the 35/36 series ceased in 1994.

As of January, 2007, the U.S. National Transportation Safety Board database[4] lists 19 fatal accidents for the 35/35A, and two for the 36/36A.

Role Business jet
Manufacturer Learjet
First flight 22 August 1973
Status Operational
Produced 1973-1994
Number built 738
Developed from Learjet 25


General characteristics

  • Crew: two (pilot and co-pilot)
  • Capacity: 6 passengers
  • Length: 48 ft 8 in (14.83 m)
  • Wingspan: 39 ft 6 in (12.04 m)
  • Height: 12 ft 3 in (3.73 m)
  • Wing area: 253.3 sq ft (23.53 m2)
  • Aspect ratio: 5.74:1
  • Empty weight: 9,154 lb (4,152 kg)
  • Max. takeoff weight: 18,000 lb (8,164 kg)
  • Powerplant: 2 × Garrett TFE731-2-2B turbofan, 3,500 lbf (16kN) each
  • Fuel capacity: 1,110 US gallons (4,200 l; 920 imp gal)

Performance

  • Maximum speed: 471 knots (542 mph, 872 km/h) at 25,000 ft (7,600 m)
  • Cruise speed: 418 knots (481 mph, 774 km/h) at 45,000 ft (14,000 m) (econ. cruise)
  • Stall speed: 96 knots (111 mph, 178 km/h) (wheels and flaps down)
  • Range: 2,874 nmi (3,290 mi, 5,295 km) (4 passengers)
  • Service ceiling: 45,000 ft (13,700 m)
  • Rate of climb: 4,525 ft/min (6.7 m/s)
  • Take-off run to 30 ft (9 m): 4,784 ft (1,458 m)
  • Landing run from 50 ft (15 m): 2,884 ft (879 m)

End notes