The Roma was destroyed by fire after the nose collapsed during high-speed flight near Langley Field in April 1922. Reaction to the loss of life of the eighteen crew in this hydrogen fire hastened the mandatory use of helium in all US military airships.
Length: 410 ft (125 m)
Height: 82 ft (25 m)
Volume: 1,000,000 cu.ft (28,317 cu.m)
Max speed: 80 mph (129 kmh)
Range on 2 engines: 2,796 mls (4,500 km)
Range on 6 engines: 1,709 mls (2,750 km)