Scottish Aviation HP.137 Jetstream T2 (XX481 / CU-560) from the Royal Navy (UK)
at the Royal Netherlands Air Force Open Days 2008, Leeuwarden (the Netherlands)
The Handley Page HP.137 Jetstream is a small twin turboprop airliner, with a pressurised fuselage. The aircraft was designed to meet the requirements of the United States commuter- and regional airline market. The design was later improved and built by British Aerospace as the
BAe Jetstream 31 and BAe Jetstream 32 featuring different turboprop engines. The first production model Jetstream 1 flew on 6 December 1968,
and over the next year 36 would be delivered. However by this point Handley Page had given up on the original engine, and the Jetstream 2 was launched with the larger 965 hp (720 kW) Astazou XVI, starting deliveries in late 1969. The late delivery and engine problems had driven development costs to over £13 million, far more than the original £3 million projections. Only three Jetstream 2s would be completed before
Handley Page went bankrupt, and the production line was eventually shut down in 1970. There was enough interest in the design that it was first picked up by a collaboration of investors and Scottish Aviation which formed a company called "Jetstream Aircraft" to produce the aircraft. A further ten Jetstream 1s were produced by this team. Scottish Aviation continued production of the Jetstream 2 as well, although referring to it as the Jetstream 200. In February 1972, 26 Jetstream 201s were ordered by the Royal Air Force (UK), which used them as multi-engine trainers as the Jetstream T.1. Fourteen of these were modified as observer trainers for the Royal Navy, receiving the designation Jetstream T2.