The McDonnell Douglas YC-15 72-1875 Is A Prototype Four-engine Short Take-off And Landing (STOL) Tactical Transport. Stock Photography

The McDonnell Douglas YC-15 72-1875 is a prototype four-engine short take-off and landing (STOL) tactical transport. It is on display at Edwards AFB outside of the main gate . It was McDonnell Douglas' entrant into the United States Air Force's Advanced Medium STOL Transport (AMST) competition to replace the Lockheed C-130 Hercules as the USAF's standard STOL tactical transport. In the end, neither the YC-15 nor the Boeing YC-14 was ordered into production, although the YC-15's basic design would be used to form the successful McDonnell Douglas (later Boeing) C-17 Globemaster III.