What form of transport was the R101?

R101 was one of a pair of British rigid airships completed in 1929 as part of a British government programme to develop civil airships capable of service on long-distance routes within the British Empire. It was designed and built by an Air Ministry-appointed team and was effectively in competition with the government-funded but privately designed and built R100. When built it was the world's largest flying craft at 731 ft (223 m) in length, and it was not surpassed by another hydrogen-filled rigid airship until the Hindenburg flew seven years later.

After some trial flights, and subsequent modifications to increase lifting capacity which included lengthening the airship by 46 ft (14 m), it crashed on 5 October 1930 in France during its maiden overseas voyage, killing 48 of the 54 people on board. Among the deceased passengers were Lord Thomson, the Air Minister who had initiated the programme, senior government officials, and almost all the dirigible's designers from the Royal Airship Works. The crash of R101 effectively ended British airship development, and was one of the worst airship accidents of the 1930s.