Light Passenger Jets
Yakovlev Yak-40
ICAO: YK40
Overview
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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Live fleet activity details
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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.
Sources and references used for research and fact-checking.