The Bréguet 280T was a French biplane airliner of the late 1920s, created by the manufacturer as a means of finding a civil market for their 19 warplane, as they had once tried before with the 26T. The 280T was similar to the 26T, using the Bréguet 19's flying surfaces combined with a passenger-carrying fuselage that completely filled the interplane gap. The 280 fuselage was based on the 26T's fuselage but featured refined aerodynamics. A single prototype was evaluated in autumn 1928, followed by eight production machines ordered by Air Union. These were flown on routes between Paris and southern France, between Paris and Switzerland, and (occasionally) between Paris and London. They were joined in service by a 10th machine (converted from one of the 281T prototypes), and six 284Ts with more powerful engines (one of these converted from the other 281T). Two of this latter type were also operated by Air Orient on routes to East Asia. Some of Air Union's 280Ts and 284Ts were still in service when the airline was absorbed into Air France. Variants 280T (Specifications below) First main production version with a 370 kW (500 hp) Renault 12Jb engine, nine built. 281T Prototypes with 340 kW (450 hp) Lorraine-Dietrich 12Ed engines. Two aircraft built, one later converted to 280T, the other to 284T standard. 284T Second main production version with 450 kW (600 hp) Hispano-Suiza 12Lbrx engine, seven built.
