Learjet 31

1987

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Learjet 31

The Learjet 31 combined the fuselage, cabin and engines of the Model 35A/36A with the wing of the Model 55. Powered by two TFE731-2 turbofans, and incorporating winglets in place of tiptanks, plus 'Delta Fins' under the rear fuselage to give increased directional stability at all speeds, the Learjet 31 aerodynamic prototype first flew on 11 May 1987 and the type was certificated by the FAA in August 1988. Able to carry seven passengers and two crew over ranges up to 3076km, the LJ31 can cruise at 15545m. Two EFIS-equipped versions were ordered by Singapore Airlines specially configured for crew training and by mid-1991, when the type was superseded by the Model 31A and 31A/ER, about 30 had been delivered. The Learjet 31A replaced the earlier aircraft on the Wichita production line in July 1991 and features an integrated digital avionics package, and can also be equipped with a braking parachute installed internally under the tail. The extended-range Learjet 31A/ER is a Model 31A with a higher maximum takeoff weight and able to carry extra fuel.

Specification 
 MODELLearjet 31A
 ENGINE2 x Garrett TFE731-2 turbofans, 1588kg
 WEIGHTS
  Take-off weight7030 kg15499 lb
  Empty weight4575 kg10086 lb
 DIMENSIONS
  Wingspan13.3 m44 ft 8 in
  Length14.8 m49 ft 7 in
  Height3.7 m12 ft 2 in
  Wing area24.5 m2263.72 sq ft
 PERFORMANCE
  Cruise speed832 km/h517 mph
  Ceiling15545 m51000 ft
  Range3076 km1911 miles

Comments
Dennis, e-mail, 23.12.2013 06:35

My owner recently purchased 31-33d. I would appreciate talking to any of y'all with experience in the aircraft. Please email me at dnnsstphns@yahoo.com

reply

Steve Bigham, e-mail, 19.07.2013 00:17

I had the luxary of flying 31-033C for Cool Corp in Jamaica. Loved that plane. Agile and a nice step from the LR55 I had to deal with on the mainland. Yes the cabin was smaller, but the EFIS with the single FMS was more efficient. Great fun.

reply

orlando arroyo, e-mail, 18.07.2012 00:51

I own and flight one of the Singapore Airline planes
is a Joy to have Gigant EFIS and alot of fixtures of the 747 that Singapore Airlines put in the cockpit to help the pilots in the training to fly bigger planes

reply

mike, e-mail, 09.02.2012 19:02

there were 6 built. 033,a,b,c,d and then 034

reply

beifang, 18.06.2011 11:54

braking parachute installed internally under the tail. The extended-range Learjet 31A /ER is a Model 31A with a higher maximum takeoff weight and able to carry extra fuel.

reply

Robert G Dwyer, e-mail, 28.06.2008 07:34

There were actually four built for Singapore Airlines (S /Ns 31-033, 31-033A, 31-033C, 31-033D---I've flown two of them). They were basically LR31's but with Honeywell EFIS and some of the vert. instruments out of the LR55, and had the ER fuselage tank.

reply

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