the nearest size rotor. The first test flight was achieved 31 August 1970. The first prototype MBB BO 105 tested the airframe with Scout main rotor head and blades but it was destroyed due to ground resonance during its initial trials. About 150 Scouts were built through 1968, primarily at the Fairey Aviation Division factory at Hayes. Operational history The Scout formed the backbone of the Army Air Corps throughout the 1960s and well into the 1970s; the first Scout flew on 29 August 1960 and an initial order for 66 aircraft followed a month after its first flight. Engine problems delayed the introduction of the Scout until 1963, and as an interim measure the Army Air Corps received a small number of Alouette II helicopters. Although the aircraft's entry into service was delayed, the Scout still had a number of teething troubles when it was introduced. One of the earliest losses was XR596, which crashed into the jungle near Kluang airfield in southern Malaya on 16 July 1964, following a fuel pump failure. The two crew died in the incident. Engine failures were responsible for the loss of at least 11 military and civilian registered aircraft. The engine life of the Nimbus during the early part of its service was notoriously low, with four to six flying hours being the norm. A competition was allegedly held, with a prize to the first unit that could achieve an engine life of 25 flying hours. Operational experience and development work steadily improved the reliability of the Nimbus and by 1964 engine life had improved to two or three engine changes per 1,000 flying hours. The Scout AH Mk 1 was operated by the Army Air Corps on general light work, including observation and liaison. Like the Wasp, the Scout could be fitted out with different role equipment including flotation gear and a Lucas air-driven hoist which had a lift capacity of . In the light attack role, it was capable of carrying one pintle machine gun in the rear cabin (it is possible to carry two pintle-mounted GPMGs in the cabin, although this would, unsurprisingly, be somewhat cramped) or two forward-firing 7.62mm L7 General Purpose Machine Guns (GPMGs) fixed to the undercarriage skid. These GPMG combinations were sometimes used in unison to great effect. The forward firing GPMGs were electrically operated, being fired by the pilot and aimed using a rudimentary