List of Royal Air Force conversion units
List of conversion units

List of Royal Air Force conversion units

Section Title: List of conversion units
Table Section Text: None

Unit	Dates	Aircraft	Base	Notes

226 OCU	Aug 46–Aug 49 Sep 49–Jun 55 Jun 63–Sep 74 Oct 74–Sep 91	Oxford I, Beaufighter X Hornet F.1 Mosquito III/TT.35 Tiger Moth II Vampire F.1/FB.5/T.11 Meteor F.3/F.4/T.7/F.8/FR.9 Tempest II Martinet I Spitfire XIV/XVI/XVIII/XIX/F.22 Javelin T.3 Lightning F.1/F.1A/F.3/T.4/T.5 Jaguar GR.1/T.2	RAF Molesworth RAF Bentwaters RAF Driffield RAF Stradishall RAF Middleton St. George RAF Coltishall RAF Lossiemouth	Formed at Molesworth by re-designating 1335 (Meteor) CU. Disbanded at Driffield to become 203 AFS.

227 OCU 227 (AOP) CU	May 47–Dec 47 Dec 47–May 50	Tiger Moth II Oxford I Auster V Auster VI Auster T.7 Auster A.2/45 Harvard IIB	RAF Andover RAF Middle Wallop	Formed by re-designation of No. 43 OTU Became the Air Observation Post School.

228 OCU	May 47–Sep 61 May 65–Dec 66 Aug 68–Jul 92	Martinet I Master II Oxford I Tiger Moth II Brigand B.1/T.4/T.5 Tempest V Buckmaster T.1 Wellington XVIII Mosquito III/VI/NF.30/TT.35/NF.36 Balliol T.2 Valetta C.1/T.3/T.4 Prentice T.1 Vampire T.11 Meteor F.4/T.7/NF.11/NF.12/NF.14 Anson XIX Chipmunk T.10 Javelin T.3/FAW.5/FAW.7/FAW.9 Canberra T.4/T.11 Phantom FGR.2 Jet Provost T.4	RAF Leeming RAF Leuchars RAF Coningsby	Formed by merging No. 13 OTU and No. 54 OTU Became 64 (R) Sqn

229 OCU	Dec 50–Sep 74 Nov 84–Jul 92	Vampire FB.5/T.11 Meteor T.7/F.8/TT.8 Hunter F.1/F.4/F.6/T.7/FGA.9/FR.10 Tempest V Beaufighter X Oxford I/II Mosquito III/TT.35 Martinet I Anson T.21/T.22 Sabre F.2/F.4 Chipmunk T.10 Jet Provost T.3A Tornado F.2(T)/F.3	RAF Leuchars RAF Chivenor RAF Brawdy RAF Coningsby	Formed from 'B' and 'D' Flights of 226 OCU. Reformed 1957 at Chivenor, still there late 1962.

230 OCU	Mar 47–Oct 52 Aug 53–Feb 55 May 56–Aug 81	Lancaster I/III Lincoln B.2 Mosquito III/B.35/NF.36 Tiger Moth Anson XIX Vulcan B.1/B.2 Hastings T.5 Canberra T.4	RAF Lindholme RAF Scampton RAF Upwood RAF Waddington RAF Finningley RAF Scampton	Formed by re-designting 1653 HCU Disbanded 15 October 1952 to become the Reserve Training Squadron Became the Lincoln Conversion Flight at Upwood 1 February 1955.

231 OCU	Mar 47–Dec 49 Dec 51–Dec 90 May 1991–Apr 93	Lancaster I/III Anson XII/XIX/T.22 Mosquito III/VI/XVI/PR.34/PR.34A/B.35 Chipmunk T.10 Meteor T.7/PR.10 Canberra B.2/PR.3/T.4	RAF Coningsby RAF Waddington RAF Bassingbourn RAF Cottesmore RAF Marham RAF Wyton	Formed by re-designating No. 16 OTU re-formed at Bassingbourn by re-designation of 237 OCU Disbanded at Wyton, 15 December 1990, to become the Canberra Standardisation and Training Flight Re-formed at Wyton 13 May 1990 from the Canberra Standardisation and Training Flight

232 OCU	Feb 55–Jun 65 Feb 70–Apr 86	Valiant B.1 Victor B.1/B(PR).1/B.1A/B.2/BK.2 Canberra T.4	RAF Gaydon RAF Marham	At Gaydon, 30 June 1965, the Victor element became the Tanker Training Flight Re-formed at Marham 6 February 1970 by amalgamating the Victor (B.2) Training Flight and the Victor Training Unit

233 OCU	Sep 52–Sep 57 Oct 70–Sep 92	Vampire FB.5/FB.9/T.11 Balliol T.2 Meteor T.7/F.8 Oxford I Tiger Moth II Mosquito III/PR.34A/TT.35 Tempest V Chipmunk T.10 Hunter F.1 Harrier GR.1/GR.1A/GR.3/GR.3A/T.2/T.4/T.4A/GR.5	RAF Pembrey RAF Wittering	Became 20 (R) Sqn

235 OCU	Jul 47–Oct 53	Sunderland V Short Seaford	RAF Calshot	Became the Flying Boat Training Squadron

236 OCU	Jul 47–Sep 56 Jul 70–Sep 92	Lancaster III Oxford I/II Beaufighter X Shackleton GR.1/MR.1A Neptune MR.1 Martinet I Tiger Moth II Spitfire XVI Vampire FB.5 Anson XI/XIX Mosquito TT.35 Brigand T.5 Buckmaster T.1 Nimrod MR1 & MR2	RAF Kinloss RAF St Mawgan	Formed by re-designating No. 6 OTU

237 OCU	Jul 47–Dec 51 Oct 56–Jan 58 Mar 71–Oct 91	Oxford I Mosquito III/PR.34/PR.34A Spitfire XVI/XIX Harvard IIB Meteor T.7/PR.10 Canberra PR.3/T.4 Hunter F.6/T.7/T.7A/T.7B/T.8C Buccaneer S.2A/S.2B	RAF Benson RAF Bassingbourn RAF Wyton RAF Honington RAF Lossiemouth	Formed by re-designating No. 8 OTU Became 231 OCU at Bassingbourn.

238 OCU	1 Jun 52–Mar 58	Buckmaster T.1 Brigand T.4/T.5 Mosquito TT.35 Balliol T.2 Meteor NF.12/NF.14 Valetta C.1/T.3	RAF Colerne RAF North Luffenham	Formed by re-designating the Airborne Interception School

240 OCU	Jan 48–Apr 51 Dec 71–Oct 93	Anson I/X/XII/XIX Dakota IV Hastings MET.1 Valetta C.1 Wessex HC.2 Puma HC.1 ChinookHC.1	RAF North Luffenham RAF Odiham	Formed by merging 1333 (TS)CU with 1382 (T)CU

241 OCU	Jan 48–Apr 51 Jul 70–Oct 93	York C.1 Halifax IX Hastings C.1 Valetta C.1 Tiger Moth II Anson XI/XII Brittania C.1/C.2 Andover C.1 Belfast C.1 VC10 C.1 Tristar C.1 BAe 146	RAF Dishforth RAF Brize Norton	Formed by re-designating 1332 HTCU. Became No. 55 (Reserve) Squadron RAF

242 OCU	Apr 51–Jul 92	Valetta C.1 Hastings C.1/MET.1/C.1A Beverley C.1 Argosy C.1 Andover C.1 Hercules C.1/C.1K/C.1P/C.3 Tiger Moth II Anson XII Chipmunk T.10	RAF Dishforth RAF Thorney Island RAF Lyneham	Became 57 (R) Sqn

1330 CU	Jun 44–Mar 46	Harvard IIA Baltimore IV/V Vengeance IV Hudson IIIA Expeditor I Marauder II/III Ventura V Hellcat II Beaufighter X Spitfire Vb Mustang IVA Anson I Dakota I/III Douglas DC-2 Mosquito III/IV Oxford I	RAF Bilbeis	No. 1 (Middle East) Check and Conversion Unit RAF re-designated.

1331 CU 1331 HTCU	Sep 44–Jan 46 Dec 46–Jan 48	Harvard IIB Vengeance IA/II/IV Beaufighter VI/X Spitfire VIII Mustang IV Mosquito III Oxford I Blenheim V Thunderbolt I/II Hurricane IIC Wellington XVI Liberator III/VI	RAF Mauripur RAF Risalpur RAF Syerston	Formed by re-designating Check and Conversion Flight.

1332 (T)HCU 1332 HTCU	Sep 44–May 47 May 47–Jan 48	Liberator III/V /VI/VII/IX York C.1 Stirling III Halifax VII/IX Skymaster C.1 Oxford I	RAF Longtown RAF Dishforth	Became 241 OCU.

1333 (TS)CU 1333 TSCU	Mar 45–Jul 46 Jul 46–Jan 48	Dakota III/IV Horsa I/II Halifax VII/IX Oxford II Miles Magister Tiger Moth Proctor IV Auster III	RAF Leicester East RAF North Luffenham	Formed by re-designating No. 107 OTU Merged with 1382 (T)CU to become 240 OCU.

1334 (TS)CU	Apr 45–Mar 45	Dakota III/IV	RAF Gujrat RAF Baroda

1335 (M)CU	Mar 45–Aug 46	Meteor F.1/F.3 Oxford II Martinet I	RAF Colerne RAF Molesworth	Became 226 OCU

1336 (TS)CU 1336 TCU	Jun 45–Mar 46	Dakota III	RAF Welford

1380 (TS)CU 1380 TCU	Aug 45–Jan 46	Wellington X Anson I Proctor II	RAF Tilstock	Formed by re-designating No. 81 OTU

1381 (T)CU	Aug 45–Feb 48	Dakota III/IV Wellington X Miles Magister Tiger Moth II Oxford I	RAF Bramcote RAF Dishforth	Formed by re-designating No. 105 OTU

1382 (T)CU	Aug 45–Jan 48	Oxford I Miles Magister Dakota III/IV	RAF Wymeswold RAF North Luffenham	Formed by re-designating No. 108 OTU Merged with 1330 TSCU to form 240 OCU.

1383 (T)CU	Aug 45–Aug 46	Dakota III Oxford II Halifax VII	RAF Crosby-on-Eden	Formed by re-designating No. 109 OTU

1384 (HT)CU	Nov 45–Jun 46	Dakota I Oxford I York C.1	RAF Ossington RAF Wethersfield	Formed by re-designating No. 6 Lancaster Finishing School RAF

1385 (HTS)CU	Apr 46–Jun 46	Stirling V Halifax VII Horsa II Oxford I	RAF Wethersfield	Absorbed by 1333 TSCU

1584 (HB)CU	Nov 43–Feb 44	Liberator III	RAF Kolar RAF Salbani	Formed by re-designating No. 1584 (Heavy Bomber Conversion) Flight RAF. Became 1673 HCU.

1651 CU 1651 HCU	Jan 42–July 44 May 44–Mar 45 Mar 45–Jul 45	Stirling I/III Lancaster I/III Oxford I Spitfire Vb Tiger Moth II Beaufighter X Halifax II	RAF Waterbeach RAF Wratting Common RAF Woolfox Lodge	During 1942 it flew 49 operational sorties for RAF Bomber Command with a loss of five aircraft. Formed by merging No.

1652 CU 1652 HCU	Jan 42–Jun 45	Halifax I/II/III/V Spitfire Vb Hurricane IIC Spitfire Vb Hurricane IIC/IV	RAF Marston Moor RAF Bentwaters	During 1942 it flew 42 operational sorties for RAF Bomber Command with a loss of three aircraft. Formed by merging No.

1653 CU 1653 HCU	Jan 42–Oct 42 Nov 43–Nov 46	Liberator II Stirling I/III Lancaster I/III Blenheim IV Ventura I Mosquito XIX Hurricane IIC Spitfire Vb Beaufighter VI	RAF Polebrook RAF Burn RAF Chedburgh RAF Lindholme RAF North Luffenham	Formed by re-designating No. 108 Conversion Flight RAF Became No. 230 Operational Conversion Unit RAF in March 1947.

1654 CU 1654 HCU	May 42–Jul 42 Jul 42–Sep 45	Manchester I Lancaster I Halifax II/V Stirling III Oxford I Hurricane IIC Spitfire Vb	RAF Swinderby RAF Wigsley	During 1942 it flew 12 operational sorties with a loss of two aircraft.

1655 MCU	Aug 42–May 43	Mosquito III/IV/XVI/B.20/B.25 Blenheim IV Oxford I	RAF Horsham St. Faith RAF Upper Heyford RAF Marham	Became Mosquito Training Unit RAF at RAF Marham

1656 HCU	Oct 42–Nov 45	Lancaster I/III Halifax II/V Manchester I Spitfire IIa/Vb Hurricane IIC	RAF Lindholme Tiger Moth II	Formed by merging 103 and 460 Squadron Conversion Fights.

1657 HCU	Oct 42–Dec 44	Stirling I/III/IV Lancaster I/II Tomahawk IIB Oxford II Hurricane IIC	RAF Stradishall	Formed by merging 7, 101 and 149 Squadron Conversion Fights.

1658 HCU	Oct 42–Apr 45	Halifax I/II/III Oxford II Hurricane IIC	RAF Riccall	Formed by merging 10, 76 and 78 Squadron Conversion Fights.

1659 HCU	Oct 42–Mar 43 Mar 43–Sep 45	Halifax I/II/III Lancaster I/III Oxford II Spitfire IIa/Vb Hurricane IIC Tiger Moth	RAF Leeming RAF Topcliffe	Formed by merging 405 and 408 Squadron Conversion Fights. Trained Canadian aircrew.

1660 HCU	Oct 42–Nov 46	Lancaster I/II/III Halifax II Manchester I Mosquito XIX Stirling I/III Oxford I Spitfire Vc Hurricane IIC Lysander I de Havilland Puss Moth	RAF Swinderby	Formed by merging 61, 97, 106 and 7 Squadron Conversion Fights. Absorbed by No. 1653 Heavy Conversion Unit RAF

1661 HCU	Nov 42–Aug 45	Lancaster I/II Halifax II/V Manchester I Mosquito XIII Stirling III Oxford II Spitfire Vb Hurricane IIC	RAF Winthorpe	Formed by merging 9, 44 and 49 Squadron Conversion Fights. Short Stirlings replaced the planned re-equipment with Handley Page Halifaxs.

1662 HCU	Jan 43–Apr 45	Lancaster I/II Halifax I/II/III/V Oxford II Spitfire Vb Hurricane IIC Tiger Moth II	RAF Blyton

1663 HCU	Mar 43–May 45	Halifax I/II/III/V Stirling I Oxford II Spitfire Vb Hurricane IIC	RAF Rufforth

1664 HCU 1664 (RCAF)HCU	May 43–Apr 44 Apr 44–Apr 45	Lancaster I/III Halifax II/III/V Oxford II Spitfire Vb Hurricane IIC	RAF Croft RAF Dishforth	The unit had the Canadian name Caribou.

1665 HCU 1665 (HT)CU	Apr 43–Jun 43 Jun 43–Jan 44 Jan 44–Aug 45 Aug 45–Jul 46	Halifax III/V/VI/VII Stirling I/III/IV Oxford II Spitfire IIa/Vb Hurricane X Tiger Moth II Mosquito VI Lancaster I	RAF Mepal RAF Woolfox Lodge RAF Tilstock RAF Saltby RAF Marston Moor RAF Linton-on-Ouse	Re-designated as 1665 (HT)CU on 10 August 1945

1666 HCU 1666 (RCAF)HCU	Jun 43–Oct 43 Oct 43–Aug 45	Halifax II/III/V Lancaster I/II/III Oxford II Spitfire IIa/Vb Hurricane IIC	RAF Dalton RAF Wombleton	The unit had the Canadian name Mohawk.

1667 HCU	Jun 43–Oct 43 Oct 43–Feb 44 Feb 44–Nov 45	Halifax II/V Oxford II Spitfire Vb Hurricane IIC Tiger Moth II Lancaster I/III	RAF Lindholme RAF Faldingworth RAF Sandtoft

1668 HCU	Aug 43–Nov 43 Jul 44–Mar 46	Lancaster I/II/III/X Mosquito XIX Spitfire Vb Hurricane IIC Beaufighter VI	RAF Balderton RAF Bottesford	Disbanded November 1943, re-formed July 1944.

1669 HCU	Aug 44–Mar 45	Handley Page Halifax Lancaster I/III Spitfire Vb Hurricane IIC	RAF Langar

1670 (T)CU	Jun 44–Jan 45	Thunderbolt Harvard IIB	RAF Yelahanka	Became 8 Refresher Flying Unit

1670 CU	Feb 44–Jun 44	Beaufighter VI	RAF Baigachi	Formed from AI MkVIII Conversion Flight

1670 (M)CU	Feb 44–Aug 45	Blenheim V Mosquito III Oxford I	RAF Yelahanka

1673 HCU	Feb 44–Apr 44 Apr 44–Nov 44	Liberator III Tiger Moth II Anson I	RAF Salbani RAF Kolar	Formed by re-designating No. 1584 (Heavy Bomber) Conversion Unit RAF.

1674 HCU	Oct 43–Nov 45	Liberator III/V/VI/VIII Halifax II Fortress I/II/IIA Wellington XIII Oxford I/II Hurricane IIC Martinet I	RAF Aldergrove various bases in Northern Ireland RAF Lossiemouth

1675 HCU	Oct 43–Aug 44 Aug 44–Oct 45	Liberator II Harvard IIA Hurricane IIB Argus II	RAF Lydda RAF Abu Sueir	Formed by re-designating 5 Heavy Bomber Conversion Unit, Lydda

1678 HCU	Sep 43–Jun 44	Lancaster II	RAF Foulsham RAF Waterbeach

1699 (BS)CU 1699 HCU	Oct 44–Jun 45	Fortress II/III Liberator VI Lancastrian II	RAF Oulton RAF Full Sutton	Became the Lancastrian Flight of No. 231 Squadron RAF

All-Weather OCU	?–?	Anson T.21 Vampire T.11 Meteor T.7/F.8/NF.12/NF.14	nomadic

Argosy CU	Nov 61–Apr 63	Argosy C.1	RAF Benson	Became the Argosy Flight of 242 OCU

Belvedere CU	Aug 64–Aug 68	Belvedere HC.1	RAF Odiham	Absorbed by the Short-Range Conversion Unit

Short-Range CU	Aug 64–Jul 67	Twin Pioneer CC.2 Wessex HC.2 Auster AOP.9	RAF Odiham	Became the Helicopter Operational Conversion Flight

Jaguar OCU	Jun 74–Sep 74	Jaguar GR.1/T.2	RAF Lossiemouth	Formed from Jaguar Conversion Team. Became 226 OCU

5 Heavy Bomber Conversion Unit	?–?	Liberator	RAF Lydda, RCAF Boundary Bay and RCAF Abbotsford]	Became 1675 HCU In April 1944 RCAF Boundary Bay BCATP No. 5 Operational Training Unit (for Heavy Conversion) established when Seventeen B-24 Liberators were scheduled to arrive fresh from American factories that first month.

Heavy Bomber Conversion Unit, Salbani	Sep 42–Jul 43	Liberator III	RAF Salbani	Became 1584 HCU

Heavy Glider Conversion Unit	Jul 42–Oct 44	Whitley V Albemarle I/GT.I/ST.II/ST.V Horsa I/II Oxford I/II Tiger Moth II Miles Magister	RAF Shrewton RAF Brize Norton	Became No. 21 Heavy Glider Conversion Unit RAF

21 HGCU	Oct 44–Dec 47	Whitley V Albemarle GT.VI Horsa I/II Oxford I Tiger Moth I Miles Magister Hotspur II/III Hadrian I Stirling IV Halifax III/VII Master II	RAF Brize Norton RAF North Luffenham	Formed by re-designation of the Heavy Glider Conversion Unit

22 HGCU	Oct 44–Dec 47	Albemarle GT.I/ST.II/ST.V/GT.VI Horsa I/II Oxford I Hadrian I	RAF Keevil RAF Blakehill Farm	Formed by re-designation of an element of the Heavy Glider Conversion Unit

23 HGCU	Oct 44–Dec 45	Albemarle GT.I/ST.V/ST.VI Horsa I/II Oxford I Hadrian I Proctor III	RAF Peplow	Formed by elements of No. 83 OTU the Heavy Glider Conversion Unit

Sentence(s)

No. 1674 is one of the Heavy Conversion Unit RAF.
No. 1674 Heavy Conversion Unit is a Royal Air Force conversion unit.

final_sentence: No. 1674 is one of the Heavy Conversion Unit RAF.
final_sentence: No. 1674 Heavy Conversion Unit is a Royal Air Force conversion unit.