Learjet 30 Series Information
The first 37 aircraft were built as the basic model, before being upgraded to 31A.
A total of 240 built as of late 2002. It first flew in May 1987 and features the 35A's fuselage with the 55's wings.
The aircraft uses the TFE731 turbofan. Delta fins at the underside of the rear
fuselage greatly improved handling characteristics. The Lear 31 features five windows on
each side. Certification was awarded in August 1988. The improved 31A and 31A/ER
are the current production models, the 31/ER being an extended range variant with a
higher maximum takeoff weight of 16,500 lbs instead of the standard 15,500 lbs. Additionally,
the 31/ER carries approximately 75 gallons more fuel. A new interior with increased headroom
was introduced in 1995.
The Learjet 35 and 36 are larger, turbofan powered developments of the initial Learjet
models, the 23, 24 and 25. The availability of the Garrett AiResearch TFE731 turbofan
in the late 1960s led to a development of the Learjet 25 that was initially known as the
25BGF (Garrett Fan). A test-bed Lear 25 with a TFE731 on its left side flew in May 1971,
while the definitive Learjet 35 prototype first flew on August 22 1973. 64 aircraft were built
as the basic 35, superseded by 35A. Early models have five starboard windows and four
port, whereas later ones have six starboard plus five port. The 35 first flew on 22nd August
1973 and is powered by TFE731-2 turbofans. It can carry up to eight passengers and is
13 inches longer than the 25. The 35A is an upgraded version of the 35 powered by two
TFE731-2-2B engines and has a range of 2,789 miles. It first flew in 1976. Over 500 of
both variants were built. Aside from turbofans, the 35 (and longer range 36) differ from
the earlier Learjet 25 in having a 0.33m (1ft 1in) fuselage stretch and five windows
(instead of four) on the right side of the fuselage.
The Learjet 35 has seating for up to eight, but has less fuel than the longer range 36, which can only seat up to six, as both types share the same maximum takeoff weight. The 35 and 36 were certificated in July 1974.
Improvements to the two models led to the 35A and 36A from 1976, with higher standard
max takeoff weights. Both models remained in production until 1994.
Built in a new construction number sequence, the Lear 36 was externally similar to the
35, but differed in having a larger fuselage fuel tank giving 500 miles longer range but
reducing cabin space to six passengers. The 36A is an upgraded version. 64 36's were
built in total.
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