Timeline of the Eurofighter Typhoon
This is the timeline of the development of the Eurofighter Typhoon, a multirole fighter aircraft manufactured by a consortium of European aerospace manufacturers, Eurofighter GmbH, formed in 1983. == 1970s == 1972 Royal Air Force (RAF) issues Air Staff Target 396 (AST-396), a requirement for a STOVL aircraft to replace the Harrier and Jaguar fleets.
Source: Wikipedia — Timeline of the Eurofighter Typhoon (CC BY-SA 4.0)