The US Marine Corps contracted Sikorsky for four YCH-53A (S-65A) prototypes. Due to budget cuts and by mutual agreement, Sikorsky built only two prototypes and used them extensively for testing. First flight of prototype was 14 October 1964.
|From||Organisation with model YCH-53A|
|Construction Numbers on database of YCH-53A|
|Construction Numbers||Help Us|
|65-001||1964|| 151613 : Sikorsky S-65 prototype, c/n 65-001; del USMC as YCH-53+ |
|65-002||1964|| 151614 : Sikorsky S-65 prototype, c/n 65-002: del USMC as YCH-53+ |
N6983R : modified by Sikorsky to CH-53G std as N6983R unk; reg +