avia.wikisort.org - Aeroplane

Search / Calendar

The Learjet 24 is an American six-to-eight-seat (two crew and four to six passengers) twin-engine, high-speed business jet, which was manufactured by Learjet as the successor to the Learjet 23.

Learjet 24
NASA Learjet 24
Role Business jet
Manufacturer Learjet
First flight January 24, 1966
Introduction November 9, 1966
Status Active
Produced 1966–1977
Number built 259

History


Learjet 24B registered in France and operated by a corporate owner. Athens Airport 1973
Learjet 24B registered in France and operated by a corporate owner. Athens Airport 1973

The Learjet 24 was designed as an improved version of the Learjet 23, which was limited to 12,500 pounds (5,700 kg) gross weight. Engineers designed the model 24 to accept up to the full 13,500 pounds (6,100 kg) gross weight permitted by FAR-25 standards.

Other improvements introduced in the Learjet 24 included:

With these changes, the LJ24 became the first business jet to be certified under FAR-25.[1]

The first flight of a Learjet 24 took place on January 24, 1966. From May 23 to 26, 1966, a Learjet 24 flew around the world in 50 hours and 20 minutes flying time as a demonstration of its capabilities.[1] Different variants were the 24A, B, C, D, E and F, with changes of takeoff weight, in-fuselage fuel tank, range, cabin and engines.

Altogether 259 Model 24s were built, and in 2001, there were still 210 Learjet 24s in use. Thirty-nine LJ24s have been lost through accidents.


Noise compliance


In 2013, the FAA modified 14 CFR part 91 rules to prohibit the operation of jets weighing 75,000 pounds or less that are not stage 3 noise compliant after December 31, 2015. The Learjet 24 is listed explicitly in Federal Register 78 FR 39576. Any Learjet 24s that have not been modified by installing Stage 3 noise compliant engines or have not had "hushkits" installed for non-compliant engines will not be permitted to fly in the contiguous 48 states after December 31, 2015. 14 CFR §91.883 Special flight authorizations for jet airplanes weighing 75,000 pounds or less – lists special flight authorizations that may be granted for operation after December 31, 2015.


Variants



Learjet 24A


Standard version. Converted from existing Learjet 23. Takeoff weight 13,499 pounds (6,123 kg). FAA certified on November 9, 1966. 81 aircraft built.


Learjet 24B


Improved variant, powered by two 2,950 lbf (13.1 kN) thrust General Electric CJ610-6 turbojet engines, and 13,499 pounds (6,123 kg) maximum take-off weight. FAA certified December 17, 1968. 49 aircraft built.


Learjet 24C


A light-weight version of the 24B, fuselage tank not fitted which would have caused a reduction in range. The Learjet 24C project was abandoned in December 1970. Take-off weight 5,675 kilograms (12,511 lb). None built.


Learjet 24D


Similar to Learjet 24C, however by changing surface tanks range and takeoff weight were increased to 6,129 kilograms (13,512 lb). Round cabin windows replaced by angular. FAA certified July 17, 1970. Replaced the 24B in production.[1] A reduced gross weight (restricted to 12,500 pounds (5,700 kg) version was also available (the 24D/A). 99 built.


Learjet 24D/A


Light-weight version with a restricted take-off weight of 5,669 kg (12,500 lb).


Learjet 24E and 24F


Two new versions were announced in 1976 the 24E and 24F, they introduced a new cambered wing and aerodynamic improvements to reduce stall and approach speed (Century III wing). The 24E did not have a fuselage fuel tank for higher payload but shorter range. Some 24E models had the fuselage tank installed later to restore range. Powered by two 2,950 lbf (13.1 kN) thrust General Electric CJ610-8A turbojet engines. On April 15, 1977, the FAA approved extended ceiling to 51,000 feet (16,000 m), the highest level then achieved in civilian aviation.[1] 29 aircraft built.


Operators


Mainly used by private individuals and corporations, one aircraft was used by NASA as the Lear Jet Observatory


Accidents and incidents


On January 6, 1977, Dolly Sinatra the mother of Frank Sinatra was one of four killed when Learjet 24 N12MK crashed into a mountain following a departure from Palm Springs Airport, United States.[citation needed] [2]


Aircraft on display


Learjet 24 s/n 131 at Wings Museum. April 2011
Learjet 24 s/n 131 at Wings Museum. April 2011
3-view line art
3-view line art

Specifications (Learjet 24F)


Data from Jane's All The World's Aircraft 1976–77[14]

General characteristics

Performance


See also


Related development

Aircraft of comparable role, configuration, and era


References


Notes
  1. "Learjet company timeline". Archived from the original on 2006-12-31. Retrieved 2007-01-08.
  2. "ASN Aircraft accident Learjet 24B N12MK Palm Springs, CA".
  3. "Aircraft". Tillamook Air Museum. Retrieved 8 November 2016.
  4. "Tillamook Air Museum keeps changing to display history". Tillamook Headlight Herald. 20 May 2016. Retrieved 8 November 2016.
  5. Olsen, Eric (29 December 2015). "Aircraft N711CW Photo". Airport-Data.com. Airport-Data.com. Retrieved 8 November 2016.
  6. Lips, Jesse (1 April 2006). "Growing Wings Family Fuels Progress And Promise". Airport Journals. AIRPORT JOURNALS. Retrieved 8 November 2016.
  7. "Airframe Dossier – Swiss American Aviation CorporationLearjet, c/n 24-131, c/r N241JA". Aerial Visuals. AerialVisuals.ca. Retrieved 8 November 2016.
  8. Skurzewski, Joe (28 June 2018). "Don Bessette donates 1969 jet to Minot's air museum". West Dakota FOX. Retrieved 23 July 2019.
  9. "FAA REGISTRY [N193DB]". Federal Aviation Administration. U.S. Department of Transportation. Retrieved 23 July 2019.
  10. "General Aviation". Evergreen Museum Campus. Evergreen Museum. Retrieved 8 November 2016.
  11. Brandt, Hanna (23 January 2014). "ARTIFACT PICK OF THE WEEK: LEARJET 24". Evergreen Museum Campus. Evergreen Museum. Retrieved 8 November 2016.
  12. "Airframe Dossier – Swiss American Aviation CorporationLearjet, c/n 203, c/r N203JL". Aerial Visuals. AerialVisuals.ca. Retrieved 8 November 2016.
  13. "Learjet Model 24D". Frontiers of Flight Museum. Frontiers of Flight Museum. Archived from the original on 29 November 2016. Retrieved 8 November 2016.
  14. Taylor 1976, pp. 283–284.
  15. "ASN Aircraft accident Learjet 24B N234CM Cuatro Ciénegas".
  16. "Coahuila | Bureau of Aircraft Accidents Archives".
  17. "Crash of a Learjet 24B near Cuatro Ciénegas: 2 killed | Bureau of Aircraft Accidents Archives".
Bibliography



На других языках


[de] Learjet 24

Beim Learjet 24 der Lear Jet Corporation handelt es sich um ein zweistrahliges Geschäftsreiseflugzeug in Tiefdeckerauslegung. Das Flugzeug hat ein 2-Personen-Cockpit und eine Kabine für bis zu 6 Passagiere, die in der Sitzanordnung 1+1 untergebracht sind. Typischerweise wurden jedoch nur Sitze für 4 Passagiere eingebaut.
- [en] Learjet 24

[fr] Learjet 24

Le Learjet 24 est un avion d'affaires biréacteur[2] américain développé dans les années 1960[3] et construit jusqu'en 1980. Il s'agit d'une version améliorée du Learjet 23.

[it] Learjet 24

Il Learjet 24 è un business jet statunitense bigetto prodotto dalla Learjet. Si tratta di una versione sviluppata dal Learjet 23.

[ru] Learjet 24

Learjet 24 — двухдвигательный самолёт бизнес-класса производства американской фирмы Swiss American Aviation Corporation («Learjet»).



Текст в блоке "Читать" взят с сайта "Википедия" и доступен по лицензии Creative Commons Attribution-ShareAlike; в отдельных случаях могут действовать дополнительные условия.

Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.

2019-2025
WikiSort.org - проект по пересортировке и дополнению контента Википедии