No. 1657 Heavy Conversion Unit RAF
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Conversion units and operational conversion units (OCUs) were training units of the Royal Air Force (RAF).


History

With the introduction of new heavy bombers, the four-engined Short Stirling, Avro Lancaster, and Handley Page Halifax, the Royal Air Force introduced heavy conversion units (HCU). These HCUs began forming in late 1941, to qualify crews trained on medium bombers to operate the heavy bombers before final posting to the operational squadrons. Some of the HCUs were involved in bombing operations over Germany. After the end of the Second World War, the role of the HCUs was taken over by the operational conversion units (OCUs). Although the units had nominal bases, different flights and individual aircraft usually were detached nearer the operational bases. RAF OCUs are training units that prepare aircrew for operations on a particular type or types of aircraft or roles. Some OCUs have a Shadow squadron, shadow, or reserve, squadron designation, which is used if the unit has a war role.


Current RAF OCUs

F-35 Lightning – RAF Marham *No. 207 Squadron RAF, 207 Squadron Typhoon – RAF Coningsby *No. 29 Squadron RAF, 29 Squadron Hawk T.2 – RAF Valley *No. 4 Squadron RAF, 4 Squadron Support helicopter (Aérospatiale SA 330 Puma, Puma and Boeing CH-47 Chinook, Chinook) – RAF Benson *No. 28 Squadron RAF, 28 Squadron Air Mobility (Airbus A400M Atlas, Atlas and Boeing C-17 Globemaster III, C-17) – RAF Brize Norton *No. 24 Squadron RAF, 24 Squadron ISR (Boeing E-7 Wedgetail, Wedgetail, Boeing P-8 Poseidon, Poseidon) – RAF Lossiemouth *No. 42 Squadron RAF, 42 Squadron ISR (General Atomics MQ-9 Reaper, Reaper, General Atomics MQ-9 Reaper, Protector,Boeing RC-135, Rivet Joint and Shadow R1, Shadow) – RAF Waddington *No. 54 Squadron RAF, 54 Squadron Tutor – RAF Wittering *No. 115 Squadron RAF, 115 Squadron Some aircraft types operated by a single squadron, which includes most transport aircraft, and most ISTAR aircraft, are not big enough to need a dedicated OCU squadron for their training requirements; they may only have a few at any time. Therefore, smaller squadrons also incorporate training facilities to allow them to process aircrew onto their aircraft type. Some roles, such as ISTAR, require more rear crew for the aircraft, such as weapon systems officers (WSOs) and weapon systems operators (WSOps) – their training can be more generalised, and this is carried out by No. 54 Squadron RAF, 54 Squadron at RAF Waddington. This reduces the training requirement on the individual ISTAR squadrons, by providing aircrew who require only aircraft conversion training when they reach their squadrons. Pilots are trained directly onto their aircraft type by the frontline squadrons using training "flights". An example of this is the OCU flight of No. 24 Squadron RAF, 24 Squadron, which trains new Atlas and C-17 aircrew onto the aircraft. 115 Squadron trains flying instructors for all three branches of the British Armed Forces. 207 Squadron trains both RAF and Royal Navy pilots on the F-35 Lightning. OCUs are monitored by the RAF's Central Flying School to maintain training standards. Training is delivered by qualified flying instructors (QFIs) and qualified weapons instructors, and frontline squadrons also have qualified individuals to deliver continual and refresher training after the OCU. OCUs generally also provide training for those aircrew selected to become QFIs on an aircraft type – an example would be the now disbanded No. 208 Squadron RAF, 208(R) Squadron, which previously trained aircrew for the now disbanded No. 100 Squadron RAF, 100 Squadron, QFIs for 208(R), and provided refresher training for aircrew joining the RAF aerobatic team, the Red Arrows, on the Hawk T.1.


List of conversion units


Additional


See also

Royal Air Force **List of Royal Air Force aircraft squadrons **List of Royal Air Force aircraft independent flights **List of Royal Air Force Glider units **List of Royal Air Force Operational Training Units **List of Royal Air Force schools **List of Royal Air Force units & establishments **List of RAF squadron codes **List of RAF Regiment units **List of Battle of Britain squadrons **List of wings of the Royal Air Force Army Air Corps *List of Army Air Corps aircraft units (United Kingdom), List of Army Air Corps aircraft units *Fleet Air Arm **List of Fleet Air Arm aircraft squadrons **List of Fleet Air Arm groups **List of aircraft units of the Royal Navy **List of aircraft wings of the Royal Navy *Others **List of Air Training Corps squadrons **University Air Squadron **Air Experience Flight **Volunteer Gliding Squadron


References


Citations


Bibliography

* * * * {{RAF unit types Conversion units of the Royal Air Force, Lists of Royal Air Force units and formations, Con