Air Squadron training unit, and a single operational squadron, 892 Naval Air Squadron, all home based at Yeovilton. 892 NAS commissioned with the Phantom in 1969, and embarked in Ark Royal for the first time in 1970, making the Fleet Air Arm the only naval air arm outside the United States to operate the Phantom from the deck of an aircraft carrier. Service with the Fleet Air Arm was brief, with 892 NAS operating from Ark Royal from 12 June 1970 to 27 November 1978. After that, the remaining FG.1s were transferred to the RAF to form No. 111 Squadron, a second air-defence squadron. The two RAF squadrons converted to the Tornado F.3 in 1989 when the FG.1s were withdrawn from service. F-4M (Phantom FGR.2) With the cancellation of home-grown programmes and the need to replace the Hawker Hunter and English Electric Canberra in the ground-attack and tactical reconnaissance roles, the RAF ordered 118 aircraft in 1965. The aircraft were designated Phantom FGR.2 ("Fighter/Ground attack/Reconnaissance") by the British and the prototype first flew on 17 February 1967. Like the Phantom FG.1 it was equipped with Spey engines and was externally identical, although it did not have the extendable nose-wheel. It was fitted with an AN/AWG-12 radar and fire-control system, similar to the AN/AWG-11 but without the ability to fold the radome and antenna back to enable the aircraft to fit the lifts on an aircraft carrier, and Martin-Baker Mk.H5 ejection seats. The aircraft entered service from 1969 onwards with Nos. 2, 6, 14, 17, 31, 41 and 54 Squadrons in the close air support, tactical strike and tactical reconnaissance roles. However, when the SEPECAT Jaguar entered service from 1974 onwards, the Phantom FGR.2s were redeployed in the air defence role, replacing English Electric Lightnings with Nos. 19, 23, 29, 56 and 92 Squadrons. Some FGR.2s were equipped with dual controls, and others could carry a reconnaissance pod that was equipped with a Texas Instruments RS-700 infrared linescan unit, high-definition sideways-looking radar and five optical cameras. Although not deployed in a war role RAF Phantoms were involved in air-defence duties on Quick Reaction Alert. This involved endless alarms to intercept "Bear" and other Soviet aircraft approaching British airspace, the North Sea and over Germany. The fitting of RWRs and structural reinforcements were carried out to the aircraft in the 1970s. In 1982, an AIM-9-armed Phantom FGR.2 returning from a Quick Reaction