Douglas DC-7 / American Experimental and Prototypes followed-up by the He

followed-up by the He

" with accommodation for a crew of four

It was originally powered by General Electric CJ-805-3 turbojet engines

but in June 1948 the second YB-49 was destroyed with the loss of its five man crew in a crash attributed to structural failure

in 1917 for the famed Liberty engine

Douglas DC-7 / American Experimental and Prototypes followed-up by the HeDouglas DC 7 American Airlines model airplane. Douglas' largest and last piston engined airliner, the DC 7 was one of the first airliners capable of nonstop trans Atlantic crossings between New York and London. Previously the DC 7 designation had applied to a commercial development of the C74 Globemaster I that PanAm had ordered. As it emerged though the DC 7 arose from an American Airlines requirement for a stretched longer range development of the