Variants
- Yak-42
Original production version. Max take-off weight 54,000 kg (119,050 lb).
- Yak-42ML
Version with modified avionics for use on international use (mezhdunarodnyye linii – international services). Entered service in July 1981 on the Leningrad-Helsinki route.
- Yak-42D
Long-range version (Dahl'niy – long range) increased fuel. Replaced standard Yak-42 in production.
- Yak-142
Derivative of Yak-42D with updated, western AlliedSignal avionics, spoilers to allow faster descent and enlarged cabin door to accommodate jet bridge. Also designated Yak-42A, Yak-42-100 and Yak-42D-100.
- Yak-42R
Yak-42 used as testbed for radar for Yakovlev Yak-141 fighter.
- Yak-42F
Conversion of a Yak-42 for geophysical survey and environmental monitoring. Fitted with large underwing pods containing electro-optical sensors.
- Yak-42LL
Conversion as testbed for Progress D-236 propfan engine. Single D-236 (rated at 8,090 kW (10,850shp)) mounted in place of starboard engine, on special pylon to give sufficient clearance for 4.2 m (13 ft 9¾ in) propellers. First flew 15 March 1991.
- Yak-42M
A projected but unbuilt stretched airliner. Planned to be powered by three Progress D-436 turbofans, a stretched fuselage and new wings. Design developed into Yak-242.
- Yak-242
Further developed Yak-42M, with two underwing Aviadvigatel PS-90 turbofans. Design evolved into MS-21.
Read more about this topic: Yakovlev Yak-42
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