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 Beechcraft to the bankruptcy court to sell off 20 Hawker 4000s, comprising 13 finished new 4000s, three being built and four used aircraft, at heavily discounted prices to raise money for the company. Existing owners of the aircraft type objected, indicating that this move would greatly devalue their assets. Bankruptcy judge Stuart Bernstein rejected the sale, stating that Hawker Beechcraft had not made a case for the discounted sale being necessary. On December 11, 2012 the judge reversed the order and permitted the sale of the 20 aircraft to proceed, requiring that each sale be reported to the court. In early