List of Air Ministry Specifications

(Redirected from List of air ministry specifications)

This is a partial list of the British Air Ministry specifications for aircraft. A specification started from an Operational Requirement, abbreviated "OR", describing what the aircraft would be used for - this in turn led to a specification eg a two engined fighter with 4 machine guns. So for example, OR.40 for a heavy bomber led to Specification B.12/36. Aircraft manufacturers would design and build aircraft which the Ministry then bought for evaluation by the RAF. On very rare occasions, a manufacturer would design and build an aircraft using their own money as a "Private Venture". This would then be offered to the Ministry for evaluation. If the aircraft generated interest in the Ministry or RAF due to performance or some other combination of features then the Ministry might well bring out a specification based on the Private Venture aircraft.

The system of producing aircraft to a specification ran from 1920 to 1949 during which the Air Ministry was replaced by first the Ministry of Aircraft Production and then the Ministry of Supply. The system was applied to commercial aircraft as well - one of the last being the Bristol Brabazon. During the period, over 800 specifications were issued.

1 Specification designations
2 List of specifications (incomplete)
3 Post 1949 Operational Requirements and Naval Requirements
4 Further reading
5 Categories

Specification designations

Each specification name usually followed a pattern. A leading letter was usually present to identify the aircraft purpose. The codes used included B for "heavy bomber", P for "medium bomber", F for "fighter" and A for "army co-operation". The second part was a number identifying it in sequence and then after the slash, the year it was formulated. Specifications were not always issued in sequence. Admiralty specifications, identified by the letter N (Naval) and experimental specifications identified by the letter E (Experimental), are included for completeness.

List of specifications (incomplete)

The names of the aircraft shown in the table are not necessarily those they carried when provided for evaluation. The names were usually chosen by the Air Ministry when they placed a production order.

1920 to 1929

Spec.	OR	Type	Designs (accepted and tendered)
1/20	None	First spec. issued: spares carrier	Bristol Type 37 Tramp
1/21		Long-range bomber - Vimy replacement	Vickers Virginia III
6/22		Naval carrier fighter with interchangeable wheel & float undercarriages using Jaguar or Jupiter engine - Nightjar replacement	Fairey Flycatcher, Parnall Plover
21/22		Twin-engined amphibian flying boat for civil operations - see also R.18/24	Supermarine Swan
31/22		4-seat heavy night-bomber	Handley Page Hyderabad
38/22		General Purpose seaplane/landplane	Fairey IIID
41/22		'Middle East type transport aeroplane' - civil airliner	Armstrong Whitworth Argosy, de Havilland Hercules,
B.30/22		Heavy bomber - written for Bugle II production order but Sidestrand also apparently designed to this spec.	Boulton Paul Bugle II, Boulton Paul Sidestrand
16/23	None	Spotting ship-plane	Avro Bison
26/23		Two-seat long-range day-bomber	Westland Yeovil, Hawker Horsley
4/24		Twin-engined fighter armed with two 37 mm cannons	Westland Westbury
7/24		'High Powered Single-Seater Fighter Landplane'	Avro Avenger, Fairey Firefly, Fairey Fox, Gloster Gorcock, Hawker Hornbill
9/24		Twin engine medium day-bomber - Sidestrand II production order - see also 25/27	Boulton Paul Sidestrand II
13/24		Patrol flying boat	Blackburn Iris III, Short Singapore
15/24		4-seat heavy night-bomber - initial production batch of Hyderabads	Handley Page Hyderabad I
16/24		Submarine-borne reconnaissance seaplane	Parnall Peto
19/24		Three-seat Spotter/Reconnaissance (FAA) /two-seat GP (RAF) aircraft with interchangeable land & float U/C & folding wings	Fairey IIIF
28/24		Day and night fighter - Siskin replacement	Armstrong Whitworth Starling
R.18/24		Twin-engined amphibian flying boat - military version of boat ordered to 21/22	Supermarine Southampton
17/25		Naval single-seater fighter monoplane	Avro 584 Avocet, Vickers Vireo
23/25		Two-seat day-bomber	Westland Witch
24/25		Torpedo-bomber - Horsely replacement	Vickers Vildebeest
12/26		Fast two-seat day bomber of all-metal construction using Rolls-Royce F.XIB engine	Avro Antelope, Hawker Hart, Fairey Fox II
14/26		Passenger flying boat	Short Calcutta
F.9/26	None	Day and night 'zone' fighter - no design accepted and Spec. superseded by F.20/27 (q.v.)	Armstrong Whitworth Starling II, Bristol Bulldog Mk.I, Bristol Bullpup, Gloster Goldfinch, Gloster SS.18, Hawker Hawfinch
N.21/26		Naval Fleet fighter	Armstrong Whitworth Starling II, Armstrong Whitworth AW XVI, Hawker Hoopoe
O.22/26		Naval two-seat Fleet fighter/reconnaissance	Hawker Osprey
25/27		Twin engine medium day-bomber - Sidestrand II production order - see also 9/24	Boulton Paul Sidestrand II
26/27		General purpose aircraft - D.H.9A replacement	Westland Wapiti Vickers 131 Valiant
B.19/27		Twin engine night-bomber - Virginia/Hinaidi replacement - Hendon winner but introduction delayed so runner-up (Heyford) accepted	Fairey Hendon, Handley Page Heyford, Vickers Type 150
B.22/27		Three engine night-bomber - abandoned due to delays and replaced by B.19/27 (q.v.)	Boulton Paul P.32, de Havilland D.H.72 Canberra
F.20/27		'Interception single-seat fighter'	Armstrong Whitworth Starling II, Bristol Bulldog Mk.II, Hawker Fury, Vickers Jockey, Westland Interceptor
F.29/27		Fighter utilizing a 37 mm cannon from Coventry Ordnance Works	Westland C.O.W. Gun Fighter
F.17/28		Bulldog II production order	Bristol Bulldog Mk.II
R.6/28		Patrol/reconnaissance flying boat	Short Sarafand
21/28		High speed mail carrier	Boulton & Paul P.64
4/29		ab initio trainer - Moth with Gypsy I order	de Havilland Moth
9/29		Fast two-seat day bomber - Hart I production order	Hawker Hart
13/29		4-seat heavy night-bomber - production batch of Hinaidi IIs	Handley Page Hinaidi II
B.10/29		Twin engine medium day-bomber - Sidestrand III production order	Boulton Paul Sidestrand III

1930-1939

Spec.	OR	Type	Designs (accepted and tendered)
3/30		Basic trainer - Avro 504N replacement	Avro Type 621 Trainer
6/30		ab initio trainer - Lynx-Avro (Avro 504N) production order	Avro 504N
8/30		ab initio trainer - Moth with Gypsy II order	de Havilland Moth
18/30		Fairey IIIF replacement	Fairey Gordon I
F.7/30		Fighter capable of at least 250 mph and armed with four machine guns	Supermarine Type 224, Westland F.7/30, Gloster SS.19, Gloster Gladiator
13/31		ab initio trainer with complete freedom for parachute escape by both occupants - D.H.60T accepted with modifications, becoming D.H. 82 - see also T.23/31	Avro Type 631 Cadet, de Havilland D.H. 60T Tiger Moth
18/31		Basic trainer - Avro Type 621 Trainer with Lynx engine	Avro Tutor
G.4/31		General-purpose/torpedo bomber - Wellesley one of two designs submitted by Vickers and itself a PV	Fairey G.4/31, Handley Page HP47, Hawker P.V.4, Parnall G.4/31, Vickers Wellesley, Westland PV-7
R.20/31		Twin-engined flying boat - all-metal Kestrel-engined Southampton II (Southampton IV/Scapa)	Supermarine Scapa
R.24/31		General Purpose Open Sea Patrol Flying Boat	Saunders Roe London, Short R.24/31 Knuckleduster, Supermarine Stranraer
C.26/31	OR.4	Bomber-transport	Armstrong Whitworth A.W.23, Bristol Bombay, Handley Page Harrow
T.23/31		Tiger Moth I production order	de Havilland Tiger Moth I
25/32		Basic trainer - revised-Tutor production order	Avro Tutor I
B.9/32	OR.5	Twin-engine medium bomber	Vickers Crecy, Handley Page Hampden
B.23/32		Twin-engine medium bomber - written for Heyford I production order	Handley Page Heyford Mk. I
P.27/32		Light day bomber - Hart/Hind replacement - see P.23/35	Armstrong Whitworth A.W.29, Fairey Battle
S.11./32		Naval catapault observation/spotting seaplane for carriage on cruisers	Fairey Seafox
13/33		4-engined mail seaplane and 4-engine flying boat carrier - Short-Mayo Composite	Short S.20 Mercury, Short S.21 Maia
14/33		Fairey Gordon II production order	Fairey Gordon II
24/33		Gloster Gauntlet production order	Gloster Gauntlet
B.29/33		Twin engine medium day bomber with power-operated nose turret	Boulton Paul Sidestrand V (Overstrand)
R.2/33		Long-range patrol/reconnaissance flying boat	Short Sunderland
R.3/33		Long-range patrol/reconnaissance flying boat - trials order for Singapore III	Short Singapore III
S.15/33		Naval carrier-borne torpedo bomber/spotter/reconnaissance (TSR)	Blackburn Shark, Fairey Swordfish
T.26/33		Tiger Moth II production order	de Havilland Tiger Moth II
B.23/34		Twin engine medium day bomber - Overstrand production order	Boulton Paul Overstrand
24/34		Basic trainer - production order for second batch of definitive Tutor design - see 3/30, 18/31 & 25/32	Avro Tutor I
B.3/34		Twin-engine night bomber & bomber/transport - Virginia, Heyford & Hendon replacement - transport requirement later removed after protests from manufacturers	Armstrong-Whitworth Whitley
B.20/34		Twin-engine night bomber - Hendon production order to this spec - see also B.19/27	Fairey Hendon
B.28/34		Twin-engine medium bomber - written for Heyford II production order	Handley Page Heyford Mk. II
F.5/34		High-performance fighter with air-cooled engine for overseas (hot climate) use	Bristol 146, Gloster G.38, Martin-Baker M.B.2, Vickers Type 279 Venom
G.7/34		Interim Hart day bomber replacement	Hawker Hind
O.27/34		Naval dive bomber	Blackburn Skua
P.4/34		Light bomber and close air support aircraft	Fairey P.4/34, Hawker Henley
F.36/34 (modified by F.5/34)		Eight-gun fighter with Rolls-Royce PV-12 engine	Supermarine Spitfire, Hawker Hurricane
F.37/34		Eight-gun fighter with Rolls-Royce PV-12 engine capable of 350 mph - see also F.36/34 & F.10/35	Supermarine Spitfire
A.39/34		Army Co-operation aircraft	Westland Lysander
S.38/34		Written for Swordfish production order	Fairey Swordfish I
2/35		Naval catapault-launched observation/spotting flying boat for carriage on cruisers	Supermarine Walrus
14/35		Army Co-operation aircraft - Audax replacement	Hawker Hector
16/35		Autogyro - written for Cierva C.30/Avro 671 Rota evaluation order	Avro Rota
18/35		Twin-engined coastal reconnaissance landplane - written for Anson	Avro Anson
B.1/35	OR.19	Twin-engine medium bomber	Airspeed A.S.29, Armstrong Whitworth A.W.39, Handley Page H.P.55, Vickers Warwick
B.21/35		Twin-engine medium bomber - written for Whitley I production order	Armstrong-Whitworth Whitley I
B.27/35		Twin-engine medium bomber - written for Heyford III production order	Handley Page Heyford Mk. III
B.28/35		Drawn up for Bristol 142M	Bristol Blenheim
F.9/35		Two-seat four-gun turret fighter - Demon replacement	Hawker Hotspur, Boulton Paul Defiant
F.10/35		Drawn up for the Spitfire prototype	Supermarine Spitfire
F.35/35		Very high speed fighter	Airspeed A.S.31 (not built)
F.37/35	OR.31	Fighter with cannon	Westland Whirlwind, Hawker Hurricane with Oerlikon cannon
G.24/35		General Reconnaissance - Anson replacement	Bristol Type 149, Bristol Beaufort
M.15/35		Torpedo bomber	Blackburn Botha, Bristol Beaufort
O.30/35		Naval fighter/dive bomber development of Skua (q.v.)	Blackburn Roc
P.23/35		Written for Battle I production order	Fairey Battle I
Q.32/35		Radio-controlled Fleet Gunnery target aircraft - Queen Bee replacement	Airspeed Queen Wasp
10/36		Written for Beaufort production order	Bristol Beaufort I
11/36		Interim General Reconnaissance - aircraft later re-named 'Blenheim IV' and 'Bolingbroke' name transferred to Canadian-built Blenheim	Bristol Bolingbroke I
29/36		Written for Wellington (revised Crecy from B.9/32) initial production order	Vickers Wellington I
B.30/36		Written for Hampden initial production order	Handley Page Hampden I
33/36		Written for Blenheim I production order (Rootes)	Bristol Blenheim I
36/36		Written for Lysander initial production order	Westland Lysander I
37/36		Written for Walrus additional production order	Supermarine Walrus I
B.20/36		Twin-engine medium bomber - written for Whitley III production order	Armstrong-Whitworth Whitley III
B.44/36		Written for Dagger-Hampden (Hereford) production order	Handley Page Hereford I
47/36		Written for Bombay II production order	Bristol Bombay II
B.12/36	OR.40	Heavy bomber	Armstrong Whitworth B.12/36, Short Stirling, Supermarine Type 316
R.1/36	OR.32	Small reconnaissance flying boat	Saro Lerwick, Blackburn B-20
P.13/36	OR.41	Twin-engine medium bomber for "world-wide use" - introduction delayed due to production difficulties necessitating further order of Whitleys & Wellingtons	Avro Manchester, Handley Page H.P.56, Vickers Warwick with Rolls-Royce Vulture engines.
S.41/36		Naval carrier-borne torpedo bomber - Swordfish replacement	Fairey Albacore
T.6/36		Advanced monoplane trainer - Don accepted but proved unsuitable	de Havilland Don
T.23/36		Multi-role crew trainer	Airspeed Oxford
T.40/36	OR.44	Development and production of a trainer version of the Miles Hawk	Miles Magister
2/37		Written for Blenheim I production order (Avro)	Bristol Blenheim I
37/37		Magister I production order	Miles Magister I
F.9/37	OR.49	Twin-engine fighter	Gloster G.39
F.18/37		Heavily armed interceptor	Hawker Tornado Hawker Typhoon
B.32/37	OR.44	Production contract for a four-engine version of the P.13/36 H.P.56 design	Handley Page H.P.57 Halifax
Q.8/37		Radio-controlled Fleet Gunnery target aircraft - Queen Bee replacement - role subsequently carried-on by Queen Wasp - see Q.32/35	Airspeed A.S.37 (not built)
S.24/37	OR.53	Naval torpedo/dive-bomber, reconnaissance	Supermarine S.24/37, Fairey Barracuda
T.1/37		Trainer	Heston T.1/37 Trainer, Airspeed A.S.36 (not built)
16/38		Trainer - Master I production order	Miles Master T.Mk.I
20/38		Communications aircraft - Proctor I production order	Percival Proctor I
B.9/38		Twin-engine medium bomber of simple construction using materials other than light alloy wherever possible	see B.18/38
B.18/38		Twin-engine medium bomber of mixed wood/metal construction	Armstrong Whitworth Albemarle
O.8/38		Naval carrier-borne fighter/observation - winner developed from Fairey's earlier P.4/34 entry	Fairey Fulmar
S.7/38		Naval catapault-launched observation/spotting flying boat - Walrus replacement	Supermarine Sea Otter
E.28/39		Experimental aircraft using Whittle jet-propulsion	Gloster E.28/39
F.17/39		Long-range fighter development of Bristol Beaufort - written for Beaufighter	Bristol Beaufighter
F.18/39		Fighter - Hurricane/Spitfire replacement	Martin-Baker M.B.3, Martin-Baker M.B.5
F.22/39	OR.76	Fighter fitted with heavy-calibre nose-mounted gun	Vickers Type 432 - also tests with Vickers Type 439 testbed - specification later cancelled
N.8/39		Naval two-seat carrier-borne fighter - Roc replacement - replaced by N.11/40	see N.11/40
N.9/39		Naval two-seat carrier-borne fighter - Fulmar replacement - replaced by N.11/40	see N.11/40

1940-1949

Spec.	OR	Type	Designs (accepted and tendered)
B.1/40	OR.78	Twin-engine fast bomber carrying no defensive armament	de Havilland Mosquito
B.6/40		Twin-engine day/close support bomber - later renamed Blenheim V	Bristol Bisley
F.4/40		High-altitude fighter - superseded by F.7/41 (q.v.)	Westland Welkin
F.9/40		Fighter using Whittle jet-propulsion - written for Gloster F.9/40	Gloster Meteor
F.16/40		High-altitude fighter	Vickers Type 432
F.18/40		Night fighter version of Mosquito	de Havilland Mosquito NF.II
F.19/40		Low-cost emergency production fighter	Miles M.20
F.21/40		Fighter version of Mosquito	de Havilland Mosquito F.II
N.5/40		2-seat Fleet fighter	Fairey Firefly
N.11/40		Naval Fighter	Blackburn Firebrand F.1
R.14/40		Very long range reconnaissance flying boat - Centaurus-engined Sunderland replacement	Short Shetland
S.12/40		Naval catapault-launched observation/spotting flying boat - Walrus & Sea Otter replacement - superseded by S.14/44	Supermarine Type 381
X.10/40		Troop-carrying glider capable of carrying 7 troops	General Aircraft Hotspur I; cancelled after eighteen built - redesigned Hotspur II relegated to training - see X.22/40 & X.23/40
X.22/40		Troop-carrying training glider - Hotspur II production order	General Aircraft Hotspur II
X.23/40		Troop-carrying training glider - Hotspur II further production order	General Aircraft Hotspur II
X.25/40	OR.98	Troop-carrying glider capable of carrying 14 troops	Slingsby Hengist
X.26/40		Troop-carrying glider of wooden construction capable of carrying between 24-36 fully armed troops	Airspeed Horsa
X.27/40		Tank-carrying heavy glider capable of carrying 7-ton load	General Aircraft Hamilcar
12/41		Target tug	Miles Martinet
B.2/41		Bristol Blenheim replacement	Bristol Buckingham
B.5/41	OR.106	Pressurised high-altitude bomber - evolved into B.3/42 (q.v.)	Pressurised version of the Vickers Warwick III
B.11/41		High-speed high-altitude unarmed bomber	Miles M.39
E.6/41		Experimental jet fighter - DH Spider Crab	de Havilland Vampire
F.4/41		Spitfire with Griffon engine - written for Spitfire IV but amended to include Mk. XXI redesign. Preceded in introduction by Mk.s XII & XIV - some overlap with F.1/43 (q.v.)	Supermarine Spitfire XXI
F.7/41	OR.108	High-altitude fighter - revised from F.4/40 (q.v.)	Vickers Type 432, Westland Welkin
F.10/41		Written for Hawker Tempest	Hawker Tempest
N.1/41		Naval fighter	Miles M.20/4
X.3/41		Emergency Tallboy-carrying conversion of Horsa for attack on Tirpitz - later cancelled when Lancaster was modified to carry Tallboy	Airspeed A.S.52 Horsa
B.3/42	OR.115	High-performance long-range bomber	Vickers Windsor
C.1/42		Cargo version of Lancaster - York I production order	Avro York I
E.5/42		Experimental single-engined jet fighter - later cancelled - see E.1/44	Gloster GA.1
E.6/42		Experimental lightweight Tempest - written for Tempest Light Fighter - refined & re-issued as F.2/43 (q.v.)	Hawker Fury - see F.2/43
H.7/42		Torpedo bomber - Beaufighter replacement	Bristol Brigand
R.8/42		Long-range patrol/reconnaissance flying boat - Sunderland with Hercules engines	Short Sunderland IV/Seaford
17/43		Liaison and VIP transport aircraft - Messenger I production order	Miles Messenger I
B.14/43		Heavy bomber - improved Lancaster with two-stage Merlins for Far East	Avro Lincoln
E.24/43		Experimental research aircraft capable of 1,000 mph and able to reach 36,000 ft in 1 and 1/2 minutes	Miles M.52; cancelled 1946
F.1/43		Development of Spitfire with Griffon & laminar flow wing - see also N.5/45	Supermarine Spiteful
F.2/43		Written for Tempest Light Fighter	Hawker Fury; cancelled at conclusion of hostilities.
F.12/43		Long-range fighter for Pacific - written for Hornet	de Havilland Hornet
N.4/43		Carrier-based fighter - Seafire with Griffon engine	Supermarine Seafire XV
N.7/43		Carrier-based fighter	Hawker Sea Fury
N.22/43		Revision of N.7/43; carrier-based fighter	Hawker Sea Fury
O.5/43		Barracuda replacement	Fairey Spearfish
S.11/43		Naval carrier-borne attack/strike aircraft - later cancelled - see also Q.1/46 & M.6/49	Short Sturgeon
S.28/43		Firebrand replacement	Blackburn B-48 YA.1/Firecrest
T.13/43		Advanced trainer	Bristol Buckmaster
T.23/43		Trainer - all-weather fully aerobatic three-seater	Percival Prentice
TX.3/43		Training glider	General Aircraft G.A.L.55
2/44	Brabazon Committee Type I	Long range transatlantic airliner	Bristol Brabazon I
E.1/44		Experimental Nene-powered jet fighter	Gloster GA.2
E.6/44		Written for Saro SR.44 flying-boat jet fighter	Saro SR.A/1
E.9/44		Flying wing bomber/airliner	Armstrong Whitworth A.W.52
E.10/44		Experimental Nene-powered jet fighter - Jet Spiteful	see N.5/45
N.5/44		Naval carrier-version of Hornet	de Havilland Sea Hornet
N.11/44		Long-range fighter with Rolls-Royce Eagle 22 piston engine	Entered production as the Westland Wyvern with an Armstrong Siddeley Python turboprop engine
S.14/44		Naval land-based ASR	Supermarine Seagull
X.4/44		Tank-carrying heavy glider capable of carrying 7-ton load and returning under its own power	General Aircraft Hamilcar X
A.2/45		Army Aerial Observation Post (AOP) - replacement for Taylorcraft Auster AOPs	Auster A.2/45, Heston A.2/45
B.3/45		Twin-engine fast jet bomber carrying no defensive armament - Mosquito replacement	English Electric Canberra
E.1/45	OR.207	Experimental aircraft for research into proposed tailless configuration of early DH.106 Comet airliner design	de Havilland DH.108
E.11/45		Experimental aircraft for research into low-speed handling and high Mach number flying of tailless designs - two examples of Swallow (one low- and one high-speed) ordered - see also E.1/45	de Havilland DH.108
N.5/45		Naval carrier-borne fighter - Seafang developed to this spec. but supplanted by Nene-powered, Naval version of E.10/44	Supermarine Attacker, Supermarine Seafang
GR.17/45	OR.220	Carrier-borne ASW	Blackburn B-54/B-88, Fairey Gannet
Q.19/45	OR.204	Mosquito target tug	de Havilland Mosquito TT.39
T.7/45		Advanced trainer - Harvard replacement	Avro Athena, Boulton Paul Balliol
2/46	Brabazon Committee Type I	Long range transatlantic airliner - Brabazon II (Coupled Proteus) order	Bristol Brabazon II
B.14/46	OR.239	Four engine jet heavy bomber - later used as insurance against delay of aircraft submitted to B.35/46	Short Sperrin
B.35/46		Four engine swept-wing jet heavy bomber with a cruising speed of 500 kt and a ceiling of at least 55,000 ft	Avro Vulcan, Handley Page Victor
C.16/46	Brabazon Committee Type IIB	Short-medium range airliner	Armstrong Whitworth A.W.55 Apollo, Vickers Viscount
E.27/46		Experimental aircraft for investigation into delta wing characteristics at transonic speeds	Boulton Paul P.111
E.41/46		Experimental swept-wing version of Attacker - evolved into Swift	Supermarine 510, Supermarine Swift
F.43/46		Interceptor using Rolls-Royce AJ.65 or Metrovick F.9 axial engines	see F.3/48
F.44/46		Two-seat twin-engined night/all weather fighter	see F.24/48 & F.4/48
N.7/46		Naval carrier-borne interceptor/fighter bomber	Hawker Sea Hawk
N.11/46		Two seat trainer version of Sea Fury	Hawker Sea Fury T.20
N.40/46		Naval carrier-borne jet fighter - see also F.4/48	de Havilland DH.110
R.5/46		Four engine long-range Maritime patrol bomber - Liberator GR replacement	Avro Shackleton
Q.1/46		Naval target tug	de Havilland Mosquito TT.39, Miles Monitor, Short Sturgeon TT.1,
C.2/47	Brabazon Committee Type III	Airliner	Bristol Britannia
E.8/47	OR.250	Experimental one-half scale research version of Bristol Type 172 four-jet long range bomber design - later revised for reconfigured Type 176 - all subsequently cancelled	Bristol Type 174
T.1/47		Two seat trainer version of Meteor - written around Gloster's civil demonstrator G-AKPK	Gloster Meteor T.7
E.6/48		Experimental one-third scale research version of Handley Page's B.35/46 design	Handley Page HP.88
E.15/48		Experimental one-third scale low-speed research version of Avro's B.35/46 design	Avro 707
F.3/48	OR.228	Written for P.1067, replaced F.43/46	Hawker P.1067 (Hawker Hunter)
F.4/48	OR.227	Two-seat twin-engined night/all weather fighter - replacement for Vampire NFs	de Havilland DH.110, Gloster Javelin
F.24/48		Two-seat twin-engined night/all weather fighter - interim stop-gap for F.4/48 - Meteor NF development originally to F.44/46 (q.v.)	Armstrong Whitworth Meteor NF.11
B.9/48		Four engine jet heavy bomber - less advanced stop-gap for B.35/46 designs - written around Valiant	Vickers Valiant
B.22/48	OR.302	Pathfinder version of Canberra	English Electric Canberra B.5
E.10/49		Experimental - additional order for Avro 707s including side-by-side seating conversion-trainers - these later cancelled - see also E.15/48	Avro 707
F.15/49		Jet fighter - Vampire replacement	de Havilland Venom
F.23/49	OR.268	Jet fighter	English Electric Lightning
M.6/49	OR.275	Light carrier-borne ASW - written around Short Sturgeon variant - spec derived from GR.17/45	Short S.B.3
N.14/49		Naval carrier-borne all-weather strike fighter - see also N.40/46 & F.4/48	de Havilland Sea Vixen
E.27/49		Delta wing research	Boulton Paul P.120

Post 1949 Operational Requirements and Naval Requirements

OR	Year	Type	Related aircraft
ER.100	194?	Experimental low-speed research version of English Electric P.1 (q.v.)	Short S.B.5
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
OR.303	195?	Lightweight fighter to intercept Soviet Tu-4 bombers	Folland Midge
OR.304	195?	Helicopter for Coastal Command	Bristol Sycamore
OR.323	195?	Transport aircraft	Armstrong Whitworth Argosy
OR.324	1952	Low-level bomber - Spec B.126T written to this OR - cancelled 1954	Proposals tendered by: Avro, Bristol, Handley Page, Shorts, Vickers-Armstrongs.
OR.334	195?	VTOL transport aircraft	Fairey Rotodyne; later cancelled
ER.43	~1953	Experimental direct jet-lift research aircraft	Short SC.1
ER.134	1953	Experimental high-speed research aircraft capable of sustaining Mach 2.75 to investigate effect of kinetic heating on airframe	Bristol 188
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
NA 39	1953	Carrier borne strike aircraft	Blackburn Buccaneer
NA.47	195?	Mixed rocket-jet interception fighter for RN	Saunders-Roe SR.177; cancelled 1957
NR/A.32	195?	Light carrier-borne ASW to Spec. M.123	Short Seamew
F138D	1953	Mixed rocket-jet interception fighter - written around SR.53	Saunders-Roe SR.53
OR.330	1954	Supersonic high flying reconnaissance aircraft	Avro 730, Handley Page HP.100
OR.329 /F.155	1955?	Supersonic high flying interceptor	Fairey "Delta III" cancelled 1957
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
GOR.339	1956	Tactical-Strike/Reconnaissance suitable for use from unpaved strips	BAC TSR.2
GOR.345	195?	V/STOL combat aircraft version of Hawker P.1127 - Harrier development	Hawker-Siddeley Harrier
GSR.3335	196?	Helicopter - Scout replacement	Westland Lynx
GSR.3336	196?	Helicopter - Sioux replacement	Westland Gazelle
RB.156		Reconnaissance-bomber	Avro 730
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).1/1A
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
ASR.409		Harrier replacment	MCDonnell Douglas AV-8 as Harrier GR.5
NSR.6451	19??	V/STOL carrier borne fighter aircraft - Naval Harrier	BAE Sea Harrier

List of Air Ministry Specifications

Contents

Specification designations

List of specifications (incomplete)

1920 to 1929

1930-1939

1940-1949

Post 1949 Operational Requirements and Naval Requirements

Further reading

Categories

This encyclopedia, history, geography and biography article about List of Air Ministry Specifications contains research on

Find

Find

Find