Learjet 24

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Learjet 24
NASA Learjet 24
Type Business jet
Manufacturer Learjet
Maiden flight January 24, 1966
Primary users Private
Military
NASA
Number built 210

The Learjet 24 is a six to eight seat (two crew and four to six passengers) twin-engined, high speed business jet. Manufactured by Learjet as the successor to the Learjet 23.

Contents

The Learjet 24 is an improved Learjet 23. One of the obvious differences is the addition of one extra window on each side of the cabin. Improved engines were installed and some small changes were made, in order to meet the requirements of FAR part 25 regulations (the LJ24 was the first business jet to be certified under Part 25).[1] In addition there was a new windshield, the auxiliary fuel in wing tip tanks and a fire-extinguishing system for the engines. The first flight of a Learjet 24 took place on January 24, 1966. Different variants were the 24A, B, C, D, E and F, with changes of takeoff weight, range, cabin and engines.

From May 23 to May 26, 1966, a Learjet 24 flew around the world in 50 hours, 20 minutes' flying time as a demonstration of its capabilities.[1]

Altogether 259 Model 24s were built, and in 2001, there were still 210 Learjet 24s in use. Altogether 39 LJ24s had been lost through accidents.

Standard version. Converted from existing Learjet 23. Takeoff weight 5902 kg. FAA certified on November 9, 1966. 81 aircraft built.

Improved variant with 2x General Electric CJ610-6 and 6129 kg maximum takeoff weight. FAA certified December 17, 1968. 49 aircraft built.

Similar to 24B, however without fuselage tank, thus with reduced range. Takeoff weight 5675 kg. None built.

Similar to Learjet 24C, however by changing surface tanks range and takeoff weight were increased 6129 kg. Round cabin windows replaced by angular. FAA certified July 17, 1970. Replaced the 24B in production.[1] 99 aircraft built.

Version of Learjet 24D, equipped for air taxi operations. The 24F also had an additional fuselage fuel tank. Powered by two General Electric CJ610-8A.. On April 15, 1977, the FAA approves extended ceiling to 51,000 feet (15,545 meters), the highest level then achieved in civilian aviation.[1] 29 aircraft built.

  • Cabin Height (Feet) 4.3
  • Cabin Width (Feet) 4.9
  • Cabin Length (Feet) 9
  • Cabin Volume (Cubic Feet) 192
  • Door Height (Feet) 4.2
  • Door Width (Feet) 3
  • Baggage Volume Internal (Cubic Feet) 40
  • Baggage Volume External (Cubic Feet) n/a
  • Seats - Executive 5
  • Maximum Take-off Weight (lbs) 13500
  • Maximum Landing Weight (lbs) 11880
  • Basic Operating Weight w/crew (lbs) 7830
  • Usable Fuel (lbs) 5628
  • Payload with Full Fuel (lbs) 342
  • Maximum Payload (lbs) 3570
  • Range - Seats Full (nm) 850
  • Maximum Range (nm) 1100
  • Balance Field Length (feet) 4300
  • Landing Distance (Factored) (feet) 5325
  • Rate of Climb - ALL Engines (feet p/min) 6800
  • Rate of Climb - One Engine Out (feet p/min) 2100
  • Max Cruise Speed (ktas) 475
  • Normal Cruise Speed (ktas) 439
  • Long Range Cruise Speed (ktas) 410
  • Service Ceiling at Maximum Weight (feet) 45000
  • One Engine Inoperative Service Ceiling at Maximum Weight (feet) 28500
  • Number of Engines 2
  • Engine Model CJ610-6
  • Engine Manufacturer General Electric
  • Hover In Ground Effect (feet) n/a
  • Hover Out of Ground Effect (feet) n/a

  1. ^ a b c d Learjet company timeline

Designation sequence

LJ23 - LJ24 - LJ25 - LJ28 - LJ29

Related lists

List of aircraft

v • d • e
Learjet aircraft

Civil: 23 · 24 · 25 · 28 · 29 · 31 · 35 · 36 · 40 · 45 · 55 · 60

Military: C-21

v • d • e
Lists relating to aviation

Timeline of aviation
Aircraft · Aircraft manufacturers · Aircraft engines · Aircraft engine manufacturers · Airports · Airlines
Air forces · Aircraft weapons · Missiles · Unmanned aerial vehicles (UAVs) · Experimental aircraft
Notable military accidents and incidents · Notable airline accidents and incidents · Famous aviation-related deaths
Flight airspeed record · Flight distance record · Flight altitude record · Flight endurance record · Most produced aircraft

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