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The Sea Vixen had the distinction of being the first British two-seat combat aircraft to achieve supersonic speed, albeit not in level flight. Operating from British aircraft carriers, it was used in combat over Tanganyika and over Yemen during the Aden Emergency. In 1972, the Sea Vixen was phased out in favour of the American-made McDonnell Douglas Phantom FG.1 interceptor. There have been no flying Sea Vixens since 2017.
The de Havilland Sea Vixen was a jet-powered fleet defence fighter, equipped with a modern radar and air-to-air missiles for its primary role. When it entered service, it was the first British aircraft to be solely armed with missiles, rockets and bombs; this made it the first fighter aircraft operated by the Fleet Air Arm with no gun armament. The Sea Vixen FAW.1 was armed with four de Havilland Firestreak air-to-air missiles, while the Sea Vixen FAW.2 could also carry the later, more capable Red Top missile. The original DH.110 design offered to the RAF was armed with four cannon before soon being replaced with an all-missile armament. The Red Top homing head was pointed in the direction of the target by slaving it to the AI18 radar, which was operated by the observer.
Ceiling
Combat RANGE
Aircraft Speed
Max Crew
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In 2013, the FAA modified its rules to prohibit the operation of jets weighing 75,000 pounds (34,000 kg) or less that are not stage 3 noise compliant, specifically mentioning the 125 series of aircraft. This required any aircraft of the type either to have compliant engines installed, or to be fitted with a hush kit, to fly over most of the United States after 31 December 2015
In 1961, de Havilland began work upon a small business jet, then known as the DH.125 Jet Dragon.
The aircraft went through many designation changes during its service life. Hawker Siddeley had bought de Havilland the year before the project had started, but the legacy brand and "DH" designation.