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10/31/2007. The USAF’s Advanced Medium STOL Transport (AMST) program’s goal was the development of an aircraft which will combine a smaller transport’s capability to fly in and out of extremely short and primitive forward-areas runways with a large transport’s ability to carry many of the oversized cargoes usually ferried to larger and more improved airfields. The USAF issued a request for AMST proposals to nine companies in early 1972, Boeing (YC-14A) and McDonnell Douglas (YC-15A) received a contract to develop, construct and test two prototypes each in November 1972. The pictured first YC-14A was flown (registered as N8703B) from Boeing Field, Seattle, Washington, USA, on August 9, 1976, with Boeing YC-14 Project pilot Ray McPherson and USAF Major Dave Bittenbinder at the controls. The second prototype (s/n 72-1874 c/n P2) was flown on October 21, 1976, registered as N8740B. The AMST program was canceled in 1979 and the YC-14A prototypes were placed in storage at AMARC on April 1, 1980, the first eventual being displayed at Pima Air and Space Museum, Tucson, Arizona.