Yakovlev Yak-142

The proposed short takeoff airliner built for regional jet operations.

Overview

Yakovlev Russia ICAO: YK42 1980–2003 Active $4 million (1980)

The Yakovlev Yak-142 was a proposed short takeoff and landing airliner derived from the Yak-42. Developed during the late Soviet period, it aimed to improve efficiency and performance. The project did not enter production.

Live Fleet Activity (YK42)

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Specifications

Units
Engine
3 × Lotarev D-36
Engine type
Turbofan
Thrust
3 × 14,330 lbf · 64 kN
Avionics
AlliedSignal avionics
Wing tips
No winglets
Seats
120
Crew
—
Cabin width
12 ft 6 in  ·  3.80 m
Cabin height
6 ft 10 in  ·  2.08 m
Cabin length
65 ft 3 in  ·  19.90 m
Exterior length
119 ft 4 in  ·  36.38 m
Tail height
32 ft 3 in  ·  9.83 m
Fuselage diameter
12 ft 10 in  ·  3.90 m
Wing span
114 ft 5 in  ·  34.88 m
Baggage volume
—
Gross weight
—
Empty weight
—
Max takeoff weight
127,000 lb  ·  57,500 kg
Max landing weight
112,500 lb  ·  51,000 kg
Max payload
39,700 lb  ·  18,000 kg
Fuel capacity
4,900 gal · 18,500 L · 14,800 kg (Jet A)
Max cruise speed
440 kt  ·  506 mph  ·  815 km/h
Maximum speed
—
Cruise speed
—
Approach speed
130 kt  ·  150 mph  ·  241 km/h
Range
2,200 nm  ·  2,530 mi  ·  4,070 km
Fuel burn
—
Ceiling
32,000 ft  ·  9,800 m
Rate of climb
2,500 ft/min  ·  13 m/s
Takeoff distance
5,900 ft  ·  1,800 m
Landing distance
3,600 ft  ·  1,100 m
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‘RA-42458’ KrasAvia Yakovlev Yak-42D

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Operational Context

Yakovlev Yak-142 — proposed short takeoff regional jet

The Yak-142 program emerged in the late 1980s as a modernization of the Yak-42 trijet. It was designed with improved engines and aerodynamic refinements to enhance short-field capability. The aircraft retained the general configuration of its predecessor, including a T-tail and rear-mounted engines.

Projected performance included cruise speeds near 470 knots (870 km/h) and a maximum takeoff weight exceeding 120,000 pounds (54,430 kg). Seating was expected to range from 100 to 120 passengers depending on layout. Engine upgrades were intended to improve fuel efficiency compared with earlier models.

Economic challenges following the dissolution of the Soviet Union halted further development. No production aircraft were completed. The Yak-142 remains an example of a modernization effort that did not progress beyond the proposal stage.