Air Fighting Development Unit

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One of the aircraft operated by the AFDU – a captured, German Messerschmitt Bf 109 at RAF Duxford (October 1941)

The Air Fighting Development Unit (AFDU) was an air technical intelligence part of the Royal Air Force which developed operational tactics and tested captured enemy aircraft. It was based at Royal Air Force Stations at Northolt, Duxford and Wittering.[1]

The Air Fighting Development Unit was under the control of RAF Fighter Command and the Air Ministry, and performed comparative trials and developed and promulgated tactics effective against the enemy. Also sharing Wittering with the AFDU was the Naval Air Fighting Development Unit.

These units were also tasked to carry out a variety of tests and evaluations on a wide range of fighter aircraft, aircraft modifications and new equipment prior to entering Allied service.

The units were absorbed into the Central Fighter Establishment and moved to RAF Tangmere in 1945.

Operation Banquet[edit]

The Air Fighting Development Unit, under Operation Banquet anti-invasion plans, was allocated the title No. 550 Squadron RAF.[2]

See also[edit]

Reconstitution as Air Fighting Development Squadron[edit]

The AFDU was reconstituted in the 1950s at RAF Tangmere as the Air Fighting Development Squadron (AFDS), subsequently relocating to RAF Coltishall where it operated the BAC Lightning jet fighter in its P.1B, F.1 and F.1A variants. The AFDS later relocated to RAF Binbrook in October 1962, operating the F.2 and T.4 variants until the squadron was absorbed by the Central Fighter Establishment (CFE).[3][4][5]


  1. ^
  2. ^ Lake, Alan. "Flying Units of the RAF".Airlife Publishing. Shrewsbury. 1999. ISBN 1-84037-086-6
  3. ^ "Lightning Squadrons Second Line & Trials". BAC (EE) Lightning T.5 - XS420. Retrieved 2016-04-10. 
  4. ^ "Air Vice-Marshal Colin Coulthard". Retrieved 2016-04-10. 
  5. ^ Caygill, Peter (2005-01-01). Flying to the Limit: Testing WW II Single-engined Fighters. Casemate Publishers. ISBN 9781844152261.