Hawker Siddeley Harrier as VTOL and STOL manoeuvres (where the traditional lift and control surfaces are useless) requiring skills and technical knowledge usually associated with helicopters. Most services demand great aptitude and extensive training for Harrier pilots, as well as experience in piloting both types of aircraft. Trainee pilots are often drawn from highly experienced and skilled helicopter pilots. In addition to normal flight controls, the Harrier has a lever for controlling the direction of the four vectoring nozzles. It is viewed by senior RAF officers as a significant design success, that to enable and control the aircraft's vertical flight required only a
Joint Force Harrier combined the Royal Navy's two Sea Harrier FA2 squadrons with the RAF's four Harrier GR7/7A squadrons under a single command structure within RAF Strike Command. This force was to be deployable from both "Invincible" class aircraft carriers, Royal Air Force stations and deployed air bases. The Royal Navy's contribution to the force was the Sea Harrier previously part of Naval Air Command. . In 2006, No. 3 Squadron RAF converted to the Eurofighter Typhoon. In the same year, the Sea Harrier was retired and 800 Naval Air Squadron re-equipped with former 3 Squadron Harrier GR7 and GR9 aircraft. At the