Antonov An-50

The Antonov An-50 was a planned Soviet airliner with four turbojets, drawn up by Antonov in the first part of the 1970s. It was based on the An-24R turboprop airliner, with the same airframe but four turbojets of 14.7 kilonewtons thrust each, built together with the undercarriage and placed under the inner wings, in place of the earlier two-engine arrangement. Plans were completed in 1972, but no aircraft were built. The design called for a gross weight of 24,600 kilograms and a speed of 490 kilometres per hour at 9,400 metres. The An-50 is therefore recorded as a paper project of the Antonov bureau rather than an aircraft that flew.