Hawker Siddeley Harrier the AV-8C configuration; this programme involved the installation of ECM equipment and adding a new inertial navigation system to the aircraft's avionics. Substantial changes were the Lift Improvement Devices, to increase VTOL performance; at the same time several airframe components were restored or replaced to extend the life of the aircraft. Spain's Harriers, designated AV-8S or VA.1 Matador for the single-seater and TAV-8S or VAE.1 for the two-seater, were almost identical to USMC Harriers differing only in the radios fitted. The Royal Navy's Fleet Air Arm (FAA) operated a substantially modified variant of the Harrier, the British Aerospace Sea Harrier.
Hawker Siddeley Company. In 2006 the product line was sold to a new company to be known as "Hawker Beechcraft", owned by Onex Partners and Goldman Sachs. The Hawker Siddeley name was not used to brand aircraft until 1963. Prior to this, aircraft were produced under the name of the subsidiary company (e.g. Hawker Hurricane, Hawker Sea Hawk, Gloster Javelin, Gloster Meteor). First flight date is in parentheses. The Canadian subsidiary produced rail cars, transit vehicles and engines (aircraft and ship). Hawker Siddeley Hawker Siddeley was a group of British manufacturing companies engaged in aircraft production. Hawker Siddeley combined the legacies of