The 307, a plane ahead of its time, was the first pressurized airliner. Only 5 were built, with this the only surviving example. TWA and Pan Am began operating them in 1940, but were transferred to the war effort a year later. Clipper Flying Cloud was completely restored, but on a test flight crashed into Elliott Bay in Seattle, Washington in 2002. The crash landing resulted in some corrosion and damage but the plane was restored quickly and ferried to Udzar-Hazy in 2003.