Learjet 24

from Wikipedia, the free encyclopedia
Learjet 24
NASA DFRC Lear 24 in flight.jpg
NASA's Learjet 24
Type: Business jet
Design country:

United StatesUnited States United States


Lear Jet Corporation

First flight:

January 24, 1966



Production time:

1963 to 1977

Number of pieces:


The Learjet 24 from Lear Jet Corporation is a twin- engine , low -wing business jet . The aircraft has a 2-person cockpit and a cabin for up to 6 passengers who are accommodated in the 1 + 1 seating arrangement. Typically, however, only seats for 4 passengers were installed.


The Learjet 24 is the further development of the Learjet 23 . The most important distinguishing feature from the outside is the now existing 2 cabin windows on the right side instead of the one from the previous one. Better engines were used and some minor changes were made to meet FAR Part 25 approval requirements. This also included a modified windshield, additional tanks on the wing tips ( tip tanks ) and a fire extinguishing system for the engines. The first flight took place on January 24, 1966. Different variants were the 24A, B, C, D, E and F, with changes to the takeoff mass, range, cabin and engines.

During a round-the-world flight from May 23rd to 26th, 1966, the first series machine of the variant 24A (registration N427LJ, serial number 24-100) set numerous FAI records.


A total of 259 series machines were built of the Learjet 24. 81 of the standard 24 or 24A variant, 49 of the 24B variant, 99 of the 24D type and 29 of the 24E or 24F type.


In 2001, 210 Learjet 24 were still in use. A total of 39 machines were lost due to accidents (status 02/2004).

Technical specifications

Parameter Learjet 24F data
crew 2
Passengers Max. 6th
length 10.84 m
span 13.18 m
height 3.73 m
Wing area 21.46 m²
Empty mass 3,204 kg
Takeoff mass 6,129 kg
drive 2 × General Electric CJ610 -8 with 13.6 kN thrust each
Top speed 880 km / h
Cruising speed 793 km / h
Service ceiling 15,545 m
Range 2,731 km


Learjet 24A

Standard version: 11 were converted from existing Learjet 23. Takeoff weight 5902 kg.

Learjet 24B

Improved version with 2 × General Electric CJ-610-6 and 6129 kg maximum take-off weight.

Learjet 24C

Variant like 24B, but without fuselage tank, i.e. with reduced range. Takeoff weight 5675 kg. Not produced.

Learjet 24D

Like Learjet 24C, but again increased range and take-off weight 6129 kg due to modified wing tanks. The previously round cabin windows have been replaced by angular ones.

Learjet 24E

Like Learjet 24D, but in special equipment for air taxi companies. The slow flight characteristics could be improved.

Learjet 24F

Like Learjet 24D, but again with an additional fuselage tank. 2 × General Electric CJ-610-8A. The slow flight characteristics could be improved.

See also

Individual evidence

  1. Lear Jet on a world tour: 18 international records . In: Flug Revue September 1966 p. 11
  2. Brief outline of the flight with photo of the N427LJ