Hawker Siddeley Harrier Hawker Siddeley Harrier The Hawker Siddeley Harrier, developed in the 1960s, is the first of the Harrier Jump Jet series of aircraft. It was the first operational close-support and reconnaissance fighter aircraft with vertical/short takeoff and landing (V/STOL) capabilities and the only truly successful V/STOL design of the many that arose in that era. The Harrier was developed directly from the Hawker Siddeley Kestrel prototype aircraft, following the cancellation of a more advanced supersonic aircraft, the Hawker Siddeley P.1154. The British Royal Air Force (RAF) ordered the Harrier GR.1 and GR.3 variants in the late 1960s. It was exported to
McDonnell Douglas AV-8B Harrier II a demonstration of the Hawker Siddeley Harrier on the Italian Navy ("Marina Militare") helicopter carrier , the country began investigating the possibility of acquiring the Harrier. Early efforts were hindered by a 1937 Italian law that prohibited the navy from operating fixed-wing aircraft because they were the domain of the air force. In early 1989, the law was changed to allow the navy to operate any fixed-wing aircraft with a maximum weight of over 3,300 lb (1,500 kg). Following a lengthy evaluation of the Sea Harrier and AV-8B, an order was placed for two TAV-8Bs in May 1989. Soon, a