Armstrong Whitworth Apollo Department at RAE Farnborough. The aircraft fuselage was used at Farnborough for water tank pressure testing until it was scrapped in the 1970s. Armstrong Whitworth Apollo The Armstrong Whitworth AW.55 Apollo was a 1940s British four-engine turboprop airliner built by Armstrong Whitworth at Baginton. The aircraft was in competition with the Vickers Viscount but was beset with engine problems and only two were built. The requirement resulted from the Brabazon Committee's Type II design, calling for a small, medium-range pressurized aircraft to fly its less-travelled routes which became Air Ministry Specification C.16/46 for an aircraft able to carry 24-30 passengers
Regional airliner and British Aerospace ended production of their BAe Jetstream 41 after 100 delivered. By 2006 only the ATR 42/72 models and the Dash 8 remained in production. Turboprop airliner deliveries are correlated with oil prices with a lag of a few years. Another reason for the downturn in the turboprop market was the introduction of the first regional jets. Although a number of small jets entered service in the 1950s and 60s, notably the Sud Aviation Caravelle, Fokker F28 Fellowship and DC-9, these could not compete in terms of cost of operation with the turboprop designs, and were suitable for