Abbreviations commonly used on Air Ministry Aircraft Movement Cards and Accident Record Cards
Abbreviations Used Within Aircrew Remembered Website
43 Grp D/A:- 43 Group Deposit Account - a list of aircraft awaiting - or undergoing - repair or modification.
AACU:- Anti-Aircraft Co-operation Unit
AAP:- Aircraft Acceptance Park
ADU:- Aircraft Delivery Unit
AEF:- Air Experience Flight
AFS:- Advanced Flying School
AGS Air Gunnery School
ANS:- Air Navigation School
ASS:- Air Signals School
ASU:- Aircraft Storage Unit
ATFERO:- Atlantic Ferry Organisation
AW/CN:- Awaiting Collection
AGT:- Airwork and General Trading - a firm undertaking work as part of the Civilian Repair Organisation
AST:- Air Service Training
BATF:- Beam/Blind Approach Training Flight
BCBS:- Bomber Command Bombing School
BDTF:- Bomber Defence Training Flight
BFTS:- Basic Flying Training School
BGS:- Bombing and Gunnery School
CF:- Communication Flight / Conversion Flight
CFS:- Central Flying School
CGS:- Central Gliding School / Central Gunnery School
(C) OTU:- (Coastal) Operational Training Unit
CRO:- Civilian Repair Organisation
CRP:- Contractor’s Repair Party
CS(A):- Controller of Supply (Aircraft)
DBF:- Destroyed by Fire
DBR:- Damaged Beyond Repair
E/F:- Engine Failure
EAAS:- Empire Air Armament School
ECFS:- Empire Central Flying School
EFTS:- Elementary Flying Training School
EandRFTS:- Elementary and Reserve Flying Training School
FA:- Flying Accident
FB:- Flying Battle
FBSU:- Flying Boat Servicing Unit
FEAF:- Far East Air Force
FIS:- Fighter Instructors School
F/L:- Forced Landing
FTFlt:- Ferry Training Flight
FTS:- Flying Training School
FTU:- Ferry Training Unit
FRU:- Fleet Requirements Unit
GAL:- General Aircraft Limited - part of the CRO
GR:- General Reconnaissance
GSU:- Group (or Ground) Support Unit
HCU:- Heavy Conversion Unit
HGCU:- Heavy Glider Conversion Unit
HTCU:- Heavy Transport Conversion Unit
IFTS:- Initial Flying Training School
MCU:- Mosquito Conversion Unit / Meteorological Conversion Unit
MEAF:- Middle East Air Force
MSFU:- Merchant Ship Fighter Unit
MU:- Maintenance Unit
NEA:- Non-Effective Airframe
OADF/U:- Overseas Aircraft Delivery Flight/Unit
(O)AFU:- (Observer) Advanced Flying Unit
OCU:- Operational Conversion Unit
OTU:- Operational Training Unit
(P)AFU:- (Pilot) Advanced Flying Unit
PATP:- Packed Aircraft Transit Pool
RAAA:- Repaired and Awaiting Allocation
RFS:- Reserve flying School
RIW:- Repaired in works
ROS:- Repaired on site
RS:- Radio School
RSU:- Repair and Salvage Unit
SFTS:- Service Flying Training School
SOC:- Struck Off Charge
SoT:- TSchool of Technical Training
UAS:- University Air Squadron
VGS:- Volunteer Gliding School
WFU:- Withdrawn from use
WS:- Wireless School
Damage Categories (Before 1941)
Cat. U:- Undamaged
Cat. M(u):- Capable of being repaired on site by the operating unit
Cat. M(c):- Beyond the unit’s capacity to repair
Cat. R(B):- Repair on site is not possible; the aircraft must be dismantled and sent to a repair facility
Cat. W:- Write-off
Damage Categories (1941 - 1952)
Cat. U:- Undamaged
Cat. A:- Aircraft can be repaired on site
Cat. Ac:- Repair is beyond the unit capacity, but can be repaired on site by another unit or a contractor)
Cat. B:- Beyond repair on site, but repairable at a Maintenance Unit or at a contractor’s works
Cat. C:- Allocated to Instructional Airframe duties (for ground training)
Cat E:- Write-off
Cat. E1:- Write-off, but considered suitable for component recovery
Cat. E2:- Write-off and suitable only for scrap
Cat. E3:- Burnt out
Cat. Em:- Missing from an operational sortie (Missing aircraft were categorised ‘Em’ after 28 days)
Damage Categories (1952 - 1961)
Cat. 1:- Undamaged and can remain in service.
Cat. 2:- Aircraft can be repaired within second line servicing capability of the parent or nearest unit.
Cat. 3:- The repair is beyond the capabilities of the parent or nearest unit, and will be carried out as indicated by the following suffixes:
Cat. 3 (Rep)C:- The aircraft is repairable on site by a contractor’s working party.
Cat. 3 (Rep)S:- The aircraft is repairable on site by a suitably qualified Service unit.
Cat. 3 (Rep)C:- FlyThe aircraft can be flown to the contractor’s works after temporary repair, if necessary, under restricted flight conditions.
Cat. 3 (Rep)C:- Deferred The aircraft may be flown under limiting conditions specified by the holding unit until a suitable repair date is agreed with the controlling authority. Cat. 3 (Rep)C Deferred Aircraft will ultimately be repaired by a contractor, while a Cat. 3 (Rep)S Fly Deferred aircraft will be handled by a suitable Service unit.
Cat. 4 (Rep):- Not repairable on site because special facilities and/or equipment is required. Aircraft in this category will be repaired at a contractor’s works after temporary repair, in necessary, and under restricted flight conditions.
Cat. 4 (Rogue):- The parent unit and/or controlling authority have conducted technical investigations and air tests and are satisfied that the aircraft has unsatisfactory flying characteristics.
Cat. 5(c):- Beyond economical repair or surplus, but is recoverable for breakdown to components, spares and scrap.
Cat. 5(s):- Beyond economical repair or surplus, and fit only for disposal for scrap.
Cat. 5(gi):- Beyond economical repair or surplus, but suitable for ground instructional use.
Cat. 5(m):- Missing.
Damage Categories (1961 - present)
Cat. 1:- Repairable on site by first line maintenance personnel.
Cat. 2:- Repairable on site by second line maintenance personnel.
Cat. 3:- Repairable on site but beyond the technical resources of the unit. Repairs will be done by a Service repair party (Cat.3(SER)), or civilian contractor’s working party (Cat. 3(CWP)). A Cat. 3(FLY) aircraft may be flown under limitations until repaired.
Cat.4:- The damage sustained requires special equipment not available on site and the aircraft must be moved for repair at an established Service repair depot. (Cat.4(SER)) or to a contractor’s works (Cat. 4(WKS)). A Cat. 4(FLY) aircraft may be flown from a site, after temporary repairs have been carried out, to the repair agency for full repairs.
Cat. 5:- The aircraft is damaged beyond economic repair.
Cat. 5(GI):- Damaged or surplus, but suitable for ground instructional use.
Cat. 5(COMP):- Beyond economical repair or surplus, but is salvage of components or spare parts is possible.
Cat. 5(SCRAP):- Beyond economical repair or surplus, and suitable for scrap only.
Cat. 5(MISSING):- Missing - presumed lost.
Any other abbreviations you feel we have missed are welcomed