enlarged and upgraded YC-15 that was later developed into C-17 Globemaster III. Upper surface blowing remains a fairly rare concept in use, and has been seen only on a few other aircraft, such as the Antonov An-72. Aircraft on display Aircraft serial number 72-1873, the first aircraft, is on display at the Pima Air & Space Museum in Tucson, Arizona. Aircraft serial number 72-1874, the second aircraft, is in storage at the 309th AMARG boneyard at Davis Monthan Air Force Base Specifications See also References Notes Bibliography Bowers, Peter M. Boeing Aircraft since 1916, third edition. London: Putnam 1989. . Kennedy, Betty R. Globemaster III: Acquiring the C-17, Air Mobility Command Office of History, 2004. Norton, Bill. Boeing C-17 Globemaster III, North Branch, Minnesota: Specialty Press, 2001. . Norton, Bill. STOL progenitors: the technology path to a large STOL transport and the C-17A, American Institute of Aeronautics and Astronautics, 2002. . External links YC-14 Military Transport page on Boeing.com Pima Air & Space Museum: Boeing YC-14 Edwards AFB: A Pair of Most Unusual Transports (Internet Archive) Boeing YC-14 on GlobalSecurity.org YC-14 Boeing C-14 Boeing C-14 Twinjets Engine-over-wing aircraft T-tail aircraft Aircraft first flown in 1976 High-wing aircraft