List of Air Ministry specifications
Post 1949 Specifications and Air Staff Operational Requirements/Targets (OR/ASR/AST)

List of Air Ministry specifications

Section Title: Post 1949 Specifications and Air Staff Operational Requirements/Targets (OR/ASR/AST)
Table Section Text: None

Spec	OR	Year	Type	Related aircraft

ER.100	1950	Experimental low-speed research version of English Electric P.1 (q.v.)	Short SB.5

M.101	1950	Three-seat anti-submarine aircraft	Fairey Firefly AS.7

ER.103	1947	Experimental research aircraft capable of Mach 1.5 at 36,000 ft - modified for P.1 as F.23/49 (q.v.)	English Electric P.1, Fairey Delta 2

B.104	OR.285	Vickers Valiant B.2

F.105D	Supermarine 545

N.107	de Havilland Sea Venom FAW.22

UB.109	1951	Expendable Bomber (i.e., guided missile)	Bristol Type 182

ER.110T	1952	Variable sweepback research monoplane	Bristol Type 183

N.113D&P	Supermarine N.9/47 Development and Production	Supermarine Type 544 Scimitar F.1

N.114	All-weather Naval Fighter

F.124T	1949	Rocket fighter	Bristol Type 178

EH.125	Percival P.74

B.126T	1952	Low-level bomber	Bristol Type 186

H.127	Westland-Sikorsky WS-55

HCC.127	Whirlwind helicopter for Queens Flight

C.132	OR.315	Vickers V.1000

F.137D	Avro 720

F.138D	1953	Mixed rocket-jet interception fighter - written around SR.53	Saunders-Roe SR.53

F.139	de Havilland Sea Vixen FAW.1

RH.142	OR.334	195?	VTOL transport aircraft	Fairey Rotodyne; later cancelled

ER.143	~1953	Experimental direct jet-lift VTOL research aircraft	Short SC.1

HR.144	Ultra Light Helicopter	Fairey ULH

HR.146	Development of Bristol 173 for the Royal Navy. Cancelled in favour of Westland Wessex.	Bristol Type 191 for the Royal Navy

M.148	N.A.39	Blackburn Buccaneer S.1

HR.149	Development of the Bristol 173 for Royal Canadian Navy	Bristol Type 193

H.150	Development of the Bristol 191 for the Royal Air Force	Bristol Type 192 as the Westland Belvedere HC.1

F.153D	1953	Fighter (Javelin development)	Gloster thin-wing Javelin

F.155T	1955	High-altitude fighter	English Electric P.8

R.156T	1955	Mach 3 reconnaissance aircraft	English Electric P.10

RB.156T	Reconnaissance-bomber	Avro 730

ER.163	195?	Experimental Fairey Delta 2 with de Havilland Gyron engine - later cancelled	Fairey Delta 2

ER.204D	195?	Experimental VTOL aircraft using Bristol Pegasus	Hawker P.1127

OR.301	February 1952	Rocket propelled interceptor	Saunders Roe SR.53, Avro 720

OR.303	195?	Lightweight fighter to intercept Soviet Tupolev Tu-4 bombers	Folland Midge

OR.304	195?	Helicopter for RAF Coastal Command	Bristol Sycamore

OR.323	195?	Transport aircraft - Hastings replacement	Armstrong Whitworth AW.660 Argosy, English Electric P.14

B.126T	OR.324	1952	Low-level bomber - Spec. B.126T written to this OR - cancelled 1954	Avro 721, Handley Page H.P.99 - proposals also tendered by: Bristol, Shorts & Vickers.

F.155	OR.329	1955?	Supersonic high flying interceptor	Fairey "Delta III"; cancelled 1957

OR.330	1954	Supersonic high flying reconnaissance aircraft	Avro 730, Handley Page HP.100

RH.142	OR.334	195?	VTOL transport aircraft	Fairey Rotodyne; later cancelled

GOR.339	1956	STOL Tactical-Strike/Reconnaissance aircraft capable of Mach 2 and suitable for operation from unpaved strips - Canberra replacement	BAC TSR-2; later cancelled

FGA.236	GOR.345	195?	V/STOL combat aircraft version of Hawker P.1127 - Harrier development	Hawker Siddeley Kestrel FGA.1

OR.350	18 July 1960	Maritime patrol aircraft to enter service by 1968	Nimrod MR.1

OR.351	1960	V/STOL freighter (to NATO Basic Military Requirement NMBR.4)	English Electric P.36

OR.356	19??	Supersonic V/STOL - Spec. SR.250	Hawker Siddeley P.1154; later cancelled

OR.357	19??	Maritime reconnaissance aircraft - led to Nimrod	Hawker Siddeley Nimrod

OR.362	19??	Supersonic trainer aircraft - led to Jaguar	SEPECAT Jaguar

ASR.365	196?	Helicopter - Tactical Support	Westland Puma

ASR.367	196?	Bomber - Vulcan B.2 - see also B.35/46	Avro Vulcan B.2

ASR.368	196?	Bomber - Victor B.2 - see also B.35/46	Handley Page Victor B.2

ASR.371	196?	Transport aircraft	Short Belfast

ASR.372	196?	Trainer version of Lightning - Lightning T.5	English Electric Lightning T.5

ASR.373	196?	VIP Transport aircraft - Andover CC.2	Hawker Siddeley Andover CC.2

ASR.376	196?	Tanker aircraft	Handley Page Victor B(K).1 / Handley Page Victor B(K).1A

ASR.378	196?	Transport aircraft - VC10	Vickers VC10

ASR.381	196?	Interim Maritime Patrol aircraft to Spec. MR.254 - written around Atlantique	Breguet Atlantique

ASR.382	196?	Two-seat trainer version of P.1154 for RAF - cancelled	Hawker Siddeley P.1154

ASR.384	196?	Harrier requirement - see also GOR.345	Hawker Siddeley Harrier

ASR.385	196?	Phantom for RAF	McDonnell Douglas F-4M Phantom II

ASR.397	1970	Basic jet trainer - BAC Jet Provost replacement	BAE Systems Hawk T.1

ASR.400	Airborne Early Warning Aircraft	Hawker Siddeley Nimrod AEW.3

ASR.409	Harrier replacement	BAe/McDonnell Douglas AV-8B Harrier GR.5

T.301	AST.412	Jet Provost replacement	Short Tucano T.1

GOR.2	1959	VTOL Strike Reconnaissance aircraft	English Electric P.31, Gloster P.505

Sentence(s)

Operational Requirement OR.351 has STOL (Short Takeoff/Landing) capabilities.

final_sentence: Operational Requirement OR.351 has STOL (Short Takeoff/Landing) capabilities.