At the conclusion of the project definition phase in May 1970, the concepts were reduced to two designs; a single seat Panavia 100 which West Germany initially preferred, and the twin-seat Panavia 200 which the RAF preferred. The aircraft was briefly called the Panavia Panther, and the project soon coalesced towards the two-seat option.Dorrell, David, ed. "Britain's Aircraft Industry enters the 1970s." Air Pictorial, Volume 32, No. 9, September 1970, p. 306. In September 1971, the three governments signed an Intention to Proceed (ITP) document, at which point the aircraft was intended solely for the low-level strike mission, where it was viewed as a viable threat to Soviet defences in that role.Lewis, Paul. "Europe's Fighter Jet Program: Tornado Offers Competition for U.S. Concerns Project Valued at $17 billion." The New York Times, 13 November 1979. Retrieved 13 November 1979. It was at this point that Britain's Chief of the Defence Staff announced, "two-thirds of the fighting front line will be composed of this single, basic aircraft type".
at the conclusion of the project definition phase in may 1970 the concepts were reduced to two designs; a single seat panavia 100 which west germany initially preferred and the twin-seat panavia 200 which the raf preferred the aircraft was briefly called the panavia panther and the project soon coalesced towards the two-seat optiondorrell david ed "britain's aircraft industry enters the 1970s" air pictorial volume 32 no 9 september 1970 p 306 in september 1971 the three governments signed an intention to proceed (itp) document at which point the aircraft was intended solely for the low-level strike mission where it was viewed as a viable threat to soviet defences in that rolelewis paul "europe's fighter jet program tornado offers competition for us concerns project valued at $17 billion" the new york times 13 november 1979 retrieved 13 november 1979 it was at this point that britain's chief of the defence staff announced "two-thirds of the fighting front line will be composed of this single basic aircraft type"