B-2707 SST U.S. Marine Corps and armament of the HH-3E

and armament of the HH-3E (the "Jolly Green Giant" version used in Vietnam)

with a safety record that has become almost legendary

750-shp Allison 501D-13 or 501D-13A turboprops

manufactured by Piper Aircraft

The issues were eventually resolved when the British government nationalized Rolls-Royce

B-2707 SST U.S. Marine Corps and armament of the HH-3EBoeing SST airplane model. The Boeing 2707 was the first American supersonic transport project. After winning a competition for a government funded contract to build an American SST, Boeing began development at its facilities in Seattle, Washington. The design emerged as a large aircraft with seating for 250 to 300 passengers and cruise speeds of approximately Mach 3. It was intended to be much larger and faster than preceding SST designs such as