Boeing YC-14

1st Flight 1976

The Boeing YC-14 is a twinjet short take-off and landing (STOL) tactical military transport aircraft.

It was Boeing’s entrant into the United States Air Force’s Advanced Medium STOL Transport (AMST) competition, which aimed to replace the Lockheed C-130 Hercules as the USAF’s standard STOL tactical transport.

Although both the YC-14 and the competing McDonnell Douglas YC-15 were successful, neither aircraft entered production.

The AMST project was ended in 1979 and replaced by the C-X program.

Specifications

Crew

3

Capacity

150 troops

or

69,000 lb (31,400 kg) (STOL: 27,000 lb (12,300 kg))

Length

131 ft 8 in (40.14 m)

Wingspan

129 ft 0 in (39.32 m)

Height

48 ft 4 in (14.74 m)

Wing area

1,762 sq ft (163.7 m2)

Empty weight

117,500 lb (53,410 kg)

Max take-off weight

251,000 lb (113,850 kg) (conventional landing and take-off), 170,000 lb (77,270 kg) (STOL)

Powerplant

2 × General Electric CF6-50D turbofans, 51,000 lbf (230 kN) thrust each

Performance

Maximum speed

504 mph (811 km/h, 438 kn)

Cruise speed

449 mph (723 km/h, 390 kn)

Ferry range

3,190 mi (5,136 km, 2,734 nmi)

Service ceiling

45,000 ft (13,716 m)

Rate of climb

6,350 ft/min (32.3 m/s).

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