YCH-53E Super Stallion 1974 = Three 4380hp GE T64-GE-415 turboshafts with seven-blade 79'0" main rotors; length 73'9" v: 195/172/0 range: 306 ceiling: 18,500'; ff: 3/1/74. In-flight refueling. POP: 2 prototypes. The first one hovered at 50' at a gross weight of 71,700...