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.
69,000 lb (31,400 kg) (STOL: 27,000 lb (12,300 kg))
131 ft 8 in (40.14 m)
129 ft 0 in (39.32 m)
48 ft 4 in (14.74 m)
1,762 sq ft (163.7 m2)
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)
2 × General Electric CF6-50D turbofans, 51,000 lbf (230 kN) thrust each