With the introduction of the Puma HC.1 to the RAF, an opportunity for savings was realised to provide the tactical support training for both types at the home of the helicopter support force. The Helicopter Operational Conversion Flight (HOCF) handed its Wessex HC.2 over and ATS was formed on 1 May 1971. As well as continuing its Wessex training, ATS began work to provide crews for the newly emerging operational Puma squadrons (33 in Jun 1971 & 230 in Oct 1971). It formally disbanded on 1 Jan 1972, shortly after passing its airframes and personnel over to 240 OCU. 
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Models