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United States Military Aircraft Mission Design Series

United States Navy Aircraft Mission Design Series (Pre-1962)


U.S. Army MDS evolution, pre-1962 U.S. Navy MDS evolution, pre-1962 Tri-Service MDS evolution, post-1962

SNJ-4 "Texan"

North American SNJ-4 "Texan" (World War II)

US Naval Aircraft Designations1


Except for the short period from 1917 to 1922, the U.S. Navy identified its aircraft up to 1962 by specific designation systems that conveyed a considerable amount of information concerning the origin and nature of the aircraft in simple and standardized form.

1911-1914 System1


Naval aircraft were originally identified by a letter to designate the manufacturer, followed by a number to show sequence of procurement, such as A-1 for the first Curtiss, A-2 for the second, etc. The second source, the Wright Brothers, was designated B. A deficiency in this system became apparent as soon as different types of aeroplanes were obtained from the same manufacturer. Curtiss was then given on another letter, C, to distinguish its flying-boats from its convertible landplanes-pontoon seaplanes. The first system involved only five letters to identify manufacturers, such as follows:

Curtiss A-1 "Triad"

Curtiss A-1 "Triad"

1911-1914 System
ACurtissLand and Hydro
BWrightLand and Hydro
CCurtissFlying Boat
DBurgess & CurtisHydroplane
ECurtissAmphibian

1914-1916 System1


On March 27, 1914, a new system was adopted and all aircraft then on hand were redesignated. The aircraft were identified as to type and sub-type and by sequence of procurement within each sub-type regardless of manufacturer in a manner similar to ship designations. The following designations were used:

Burgess-Dunne AH-10

Burgress-Dunne AH-10
Heavier than Air - Hydro Aeroplane
( US Navy Photo )

Aircraft Types or Classes
AHeavier than Air
BFree Balloons
CDirigibles
DKite Balloons
Aeroplane Sub-Types
AHHydro Aeroplane
ABFlying Boat
AXAmphibian

Published accounts of the system indicate that it applied to only the Navy's first 75 aeroplanes and was abandoned when a sequential serial number system, starting at 51, was adopted early in 1917. However, identification of later aircraft in official records indicate that it was carried on unofficially for short while. In the case of the AH-67 (properly A-67) the AH was used as a type designation and the 67 was a new serial number indicating the 67th naval aeroplane procured to that time rather than the 67th AH type.

1917-1922 System1


No standard system was used during these years until March 29, 1922. Aeroplanes were procured and operated under their manufacturers' names and model designations, as Curtiss HS-2L Flying Boat, Sopwith Baby seaplane and F-5L. The latter, an improved version of the Curtiss H-16 flying-boat developed in England as the F.5 and procured in the United States with a Liberty engine (hence the letter L), was produced by several manufacturers with no distinction made between them.

Curtiss HS-2L Flying Boat

Curtiss HS-2L Flying Boat

1922-1962 System1


On March 20, 1922, following the reorganization of naval aviation under the Bureau of Aeronautics, a systematic aircraft designation system was adopted. This recognized two classes of aircraft: aeroplanes, identified by the letter V, and airships, identified by the letter Z. These letters were used for administrative purposes and did not appear in the actual aeroplane designation although the Z was used in the rigid airship designations. The aeroplanes themselves were further identified as to manufacturer, type and model sequence by letters and numbers. We will not address airship designations in this section. The system was also used by the US Marines, which are part of the Navy, and was used by the USCG starting in 1935. Of the 1935 the Coast Guard which is under the jurisdiction of the Treasury Department in peacetime but uses naval organization and equipment, had not used specified system of designation. Individual aircraft were identified by serial number, sometimes proceeded by initials identifying a specific design, as FLB-52 for Flying Life Boat. The 52 was Coast Guard serial number. The system was not applied to all aeroplanes operated by the Navy. Civilian aircraft taken into service during World War II, mostly transport types, were operated under their civil model numbers, such as B-314 for the Boeing Model 314. Captured enemy aircraft under test were flown under their original designations but with Navy serial numbers, as were a few isolated U.S. Army models such as the Bell YP-59A.

In spite of being in use since 1922, the designation was not painted on naval aeroplanes until 1928, when it was applied in 3-inch figures to the rudder. Early in 1925 the Navy had started the practice of painting the manufacturer's name across the top of the rudder. This short-lived practice overlapped the adoption of the letter-number system and for a short period the name and designation were both carried on some aeroplanes. Selden was a naval aeroplane redesignated. This was done when the designation system in use was discontinued, as T-for-Transport, being changed to R, and when the Curtiss F11C-2 was redesignation BFC-2 upon adoption of the BF designation for bomber-fighter. In a few cases the basic mission of the aeroplane was simply changed, as the Curtiss F8C-1 being reassigned to observation duties as OC-1. Oddly, an entirely new design, the Curtiss Helldiver dive-bomber, was given the designation XF8C-2. There was an F8C-4 production version, but the F8C-5 was more properly redesignated O2C-1 after delivery. Aeroplanes were not redesignated when assigned new duties because of obsolescence. Observation types relegated to utility tasks (J) and training (N) retained their original O-designations.

At first, the identification emphasis was on the manufacturer, then the type of aircraft. As originally adopted in 1922, the letter identify the manufacturer was placed first, then he aircraft type letter and finally the model number. The designation MO-1 identified the airplane as the Martin (M) and the first observation type (O) procured from Martin under the new system. The -1 indicated the initial configuration of that particular model. A recognizable change in the basic model would have become MO-2. A scout model procured from Martin was MS-1. An entirely new observation model from Martin, however became M2O-1 the number 2 identifying the second O-model from the same manufacturer. This system grew as more detailed identification became desirable, and eventually contained six separate parts as detailed below, before being replaced by a common system for all US armed services aircraft in 1962.

A major change was made on March 10, 1923, when it became desirable to identify the aeroplane initially by type, so the type designation was placed first. Aircraft in service with the old arrangement retained it, however, as did aircraft of the same model procured under follow-up orders after the system was changed. A notable exception was the Martin SC-1, which was the Curtiss CS-1 built under license by Martin but using the original Curtiss designation turned around to reflect the new practice. While the letter sequence was reversed, the sequence of models was retained. The original Curtiss Navy racer design was the CR-1. Under the revised system, the second model was R2C-1. When a new Curtiss transport appeared in 1928, it was designated RC-1 with no conflict since the R-for-Racer had been dropped by that time. The naval aeroplane designation system was used from March 10, 1923, to September 18, 1962, and is discussed in detail below. The various portions are numbered in their sequence of adoption rather than by their sequence in the designation, thus:

SNJ-4 "Texan"

North American SNJ-4 "Texan" (World War II)

Aircraft Types or Classes
514236
 SN J- 4 
XF4B- 1 
 SB2C- 4C
HO2S- 1 
 F9F- 6P
1 = Type or Class4 = Manufacturer Type Sequence
2 = Manufacturer5 = Status or Class Prefix
3 = Aircraft Configuration Sequence6 = Special Purpose Suffix
(1) Type or Class Designation1

Originally, only single letters were used to identify the aeroplane series but dual letters were adopted in March 1934 to identify special dual-purpose types, as BF for Bomber-Fighter, PB for Patrol Bomber, etc. Some rather fine distinctions were made to emphasize the primary mission of the aeroplane, for example SO forScout-Observation and OS for Observation-Scout. In one case only, three letters were used - for the experimental Hall Patrol Torpedo Bomber, XPTBH-2, of 1938. Type designation letters assigned to all U.S. Navy, Marine and Coast Guard aeroplanes from 1922 to 1962 are listed below, with dates from initial assignment to the end of procurement of that type or its retirement from service. Assignment of two-letter designations was discontinued in 1946, but some aircraft carrying them retained them until the designation change of 1962. Letters in use to 1962 are indicated by an arrow in the right hand "year" column.

Grumman F8F-2 "Bearcat"

Grumman F8F-2 "Bearcat"
Type or Class Designation "F" indicates "Fighter"

(1) Type or Class Designations
LetterClassExampleYear
AAmbulanceAE-11943
AAttack (formerly BT)AD-11946 →
BBomberBT-11931-1943
BFBomber-fighterBF2C-11934-1937
BTBomber-torpedoBT2D-11942-1945
DSAnti-submarine DroneDSN-11959 →
FFighterF4F-31922 →
GTransport, single-engineGB-11939-1941
GFlight refueling tankerGV-11958 →
HHelicopter (used in combination)HO2S-11943 →
HHospital (to A, 1943)XHL-11929-1931, 1942
JTransportXJA-11928-1931
JUtilityJ2F-11931 →
JRUtility TransportJRF-51935 →
LGlider (used in combination)LNS-11941-1945
MMarine expeditionaryEM-21922-1923
NTrainerN2S-11922-1960
OObservationO2U-11922 →
OSObservation-scoutOS2U-11935-1945
PPatrolPB-11923 →
PPursuitWP-11923
PBPatrol BomberPBY-51935 →
PTBPatrol torpedo-bomberXPTBH-21937
RRacerR3C-21922-1928
RTransportRR-51931 →
RORotorcycleROE-11954-1959
SAnti-submarineS2F-11951 →
SScoutSU-21922-1946
SBScout-bomberSBD-31934-1946
SNScout-trainerSNJ-21939 →
SOScout-observationSOC-11934-1946
TTorpedoDT-21922-1935
TTrainerT2V-11948 →
TTransportTA-11927-1930
TBTorpedo-bomberTBM-31935-1946
TDTarget droneTD2C-11942-1946
TSTorpedo-scoutXTSF-11943
UUtilityUF-11955 →
UUnpiloted droneUC-1K1946-1955
WElectronic SearchW2F-11952 →

(2) Manufacturer's Designation1


A single letter was commonly used to identify the manufacturer. In the earliest applications this was logically the first letter of the manufacturer's name, as C-for-Curtiss. In only one case was multiple lettering used to identify a U.S. manufacturer, the DW-for-Dayton-Wright, which was a scout version of the Douglas DT-2 under the designation of SDW-1. Dual identification letters were also used for some of the European designs deterred for test in 1922-1923. The letters assigned to all suppliers of U.S. Navy aircraft under the 1922 to 1962 system are listed below with dates from initial assignment to the end of procurement from that manufacturer, retirement of his models from service, or change in the company. Not all of these were used on actual aircraft. Letters in use for one manufacturer from time of adoption to the change of 1962 are indicated by an arrow following the initial date.

Eastern FM-2 "Wildcat"

Eastern FM-2 "Wildcat"
Manufacturer's Designation "M" indicates General Motors Corporation (Eastern Aircraft Division)

(2) Manufacturers' Identification Letters
LetterManufacturerYear
AAeromarine Plane and Motor Company1922
AAllied Aviation Corporation (glider only)1941-1943
AAtlantic Aircraft Corporation (American Fokker)1927-1930
ABrewster Aeronautical Corporation1935-1943
AGeneral Aviation Corporation (ex-Atlantic)1930-1932
ANoorduyn Aviation, Ltd. (Canada)1946
BBeech Aircraft Company1937-1945
BBoeing Aircraft Company1923-1959
BEdward G. Budd Manufacturing Company1942-1944
BAerial Engineering Corporation (Booth, or Bee Line)1922
BSBlackburn Aeroplane & Motor Company (England)1922
CCessna Aircraft Corporation (also E)1943
CCulver Aircraft Corporation1943-1946
CCurtiss Aeroplane & Motor Company1922-1946
Cde Havilland Aircraft of Canada, Ltd.1955-1956
CHCaspar-Werke G.m.b.H. (Germany)1922
DDouglas Aircraft Corporation1922 →
DMcDonnell Aircraft Corporation (to H)1942-1946
DRadioplane Corporation (drones)1943 →
DFrankfort Sailplane Company (target drones)1945-1946
DHde Havilland Aircraft Co., Ltd. (England)1927-1931
DWDayton-Wright Airplane Company1923
EBellanca Aircraft Corporation1931-1937
ECessna Aircraft Corporation (formerly C)1951 →
EDetroit Aircraft Corporation (to Great Lakes)1928
EEdo Aircraft Corporation1943-1946
EG. Elias & Brothers, Inc.1922-1924
EGould Aeronautical Corporation (gliders)1942-1945
EHiller Aircraft Corporation (helicopters)1948 →
EPiper Aircraft Corporation (aeroplanes) (also O, P)1941-1945
EPratt-Read (gliders)1942-1945
FFairchild Aircraft, Ltd. (Canada)1942-1945
FRoyal Dutch Aircraft Manufacturing Works (Fokker)1922
FGrumman Aircraft Engineering Corporation1931 →
GGallaudet Aircraft Corporation1922
GBell Aircraft Corporation (for Bell-built Great Lakes)1935-1936
GEberhart Aeroplane & Motor Company1927-1928
GGlobe Aircraft Corporation (target drones)1946-1959
GGoodyear Aircraft Corporation1942 →
GGreat Lakes Aircraft Corporation (ex-Detroit)1929-1935
GA.G.A. Aviation Corporation (gliders)1942
HHall-Aluminum Aircraft Corporation (into Consolidated, 1940)1928-1940
HHoward Aircraft Company1941-1944
HHuff, Daland & Company (became Keystone, K, 1927)1922-1927
HStearman-Hammond Aircraft Corporation1937-1938
HSnead and Company (gliders)1942
HMcDonnell Aircraft Corporation (formerly D)1946 →
HPHandley Page, Ltd. (England)1922
JBerliner-Joyce Aircraft Corporation1929-1935
JGeneral Aviation Corporation (ex-Atlantic)1935
JNorth American Aviation Corporation (successor to General)1937 →
JLJunkers-Larsen Aircraft Corporation1922
KFairchild Aircraft Corporation (Kreider-Reisner)1937-1942
KKaiser Cargo, Inc. (Fleetwings Division)1943-1945
KKaman Aircraft Corporation (Helicopters)1950 →
KKeystone Aircraft Corporation (ex-Huff, Daland)1927-1930
KKinner Airplane and Motor Corporation1935-1936
KKreider-Reisner Aircraft Company, Inc. (Fairchild)1935
KMartin, J.V.1922-1924
KNash-Kelvinator Corporation1942
LBell Aircraft Corporation (helicopters since 1946)1939 →
LColumbia Aircraft Corporation1945
LGrover Loening, Inc.1932-1933
LLangley Aviation Corporation1942-1943
LLoening Aeronautical Engineering Corporation (into Keystone)1922-1932
LL.W.F. Engineering Corporation1922
MGlenn L. Martin Company1922 →
MGeneral Motors Corporation (Eastern Aircraft Division)1942-1945
MMcCulloch Motors Corporation1953-1954
NGyrodyne Company of America, Inc. (drones, rotocycles)1960
NNaval Aircraft Factory1922-1945
OLockheed Aircraft Corporation (Plant B)1931-1950
OPiper Aircraft Corporation (also E, P)1960
OViking Flying Boat Corporation1929-1936
PPiasecki Helicopter Corporation (ex-P-V Engineering)1946-1960
PPiper Aircraft Corporation (gliders)1942-1943
PPitcairn Autogyro Company1931-1932
PP-V Engineering Forum (became Piasecki, Vertol)1944 →
PVertol Aircraft Corporation (ex-Piasecki, P-V; to Boeing 1960)1956 →
PSpartan Aircraft Company1940-1941
PLGeorge Parnall & Company (England)1922
QBristol Aeronautical Corporation (glider)1941-1943
QFairchild Engine and Airplane Corporation1928 →
QStinson Aircraft Corporation (into Convair, 1942)1934-1936
QChas. Ward Hall, Inc.1926
RAeronca Aircraft Corporation (Army TG-5 glider)1942
RAmerican Aviation Corporation (glider)1942
RBrunswick-Balke-Collender Corporation1942-1943
RFord Motor Company1927-1932
RInterstate Aircraft & Engineering Corporation (drones)1942 →
RMaxson-Brewster Corporation1939-1940
RRadioplane Division, Northrop Corporation (target drones)1943 →
RRyan Aeronautical Company1941-1946
ROOfficine Ferroviarie Meridionali Romeo (Italian-built Fokker C-V)1933
SSchweitzer Aircraft Corporation (gliders)1941
SSikorsky Aviation Corporation (helicopters since 1943)1928 →
SStearman Aircraft Company (became Boeing-Wichita, 1939)1934-1945
SStout Engineering Laboratories1922
SSperry Gyroscope (target drones)1950
SSupermarine (Spitfire as FS-1)1943
TNew Standard Aircraft Corporation1930-1934
TThe Northrop Corporation (became Douglas-El Segundo)1933-1937
TTaylorcraft Aviation Corporation (Army TG-6 glider)1942
TNorthrop Aircraft, Inc. (Army P-61 as F2T-1)1944
TTempo Aircraft Corporation1956
TTimm Aircraft Corporation1941-1943
TThomas-Morse Aircraft Corporation1922
UChance Vought Corporation (now Ling-Temco-Vought)1922 →
VLockheed Aircraft Corp. (Vega, Plant A)1942 →
VCanadian Vickers, Ltd.1942-1945
VVultee Aircraft, Inc. (into Consolidated as Convair, Y, 1942)1941
VKVickers, Ltd. (England)1922
WWaco Aircraft Corporation (gliders since 1942)1934-1945
WWright Aeronautical Corporation1922-1926
WCanadian Car & Foundry Co., Ltd.1942-1945
XCox-Klemin Aircraft Corporation1922-1924
YConsolidated Aircraft Corporation (to Convair, 1942)1926 →
ZPennsylvania Aircraft Syndicate1933-1934

(3) Aircraft Configuration Sequence1


The initial configuration of naval aeroplane was identified by the number 1 separated from the basic designation by a dash. Minor changes were identified by sequential numbers: -2, -3, etc. In most cases there were much greater changes between experimental prototype, as XSB2C-1, and its first production version, the SB2C-1, then there was between the SB2C-1 and the improved SB2C-3 (the XSB2C-2 was a seaplane version). However it was generally recognized that there were significant differences between prototype and initial production models.

Grumman F9F-5 "Panther"

Grumman F9F-5 "Panther"
Aircraft Configuration Sequence "5" indicates the 5th configuration of the basic F9F

(4) Manufacturer Type Sequence Number1


This number reflects the procurement sequence of different models of a similar type procured from the same manufacturer, as FF-1 for Grumman's first fighter (no number used in this case), F2F-1 for the second Grumman fighter, F3F-1 for th third, etc. The Grumman fighter series is a great example of the use of this sequence.

Grumman F9F-5 "Panther"

Grumman F9F-5 "Panther"
Manufacturer Type Sequence Number "9" indicates the 9th Grumman "Fighter".

(4) Manufacturer Type Sequence Number
Example of Grumman Fighter Series
GrummanFF-1 
GrummanF2F-1 
GrummanF3F-1 
GrummanXF4F-1Wildcat
GrummanF5F-1Skyrocket
GrummanF6F-1Hellcat
GrummanF7F-1Tigercat
GrummanF8F-1Bearcat
GrummanF9F-1Panther
GrummanF9F-6Cougar
GrummanXF10F-1Jaguar
GrummanF11F-1Tiger

(5) Status or Class Prefix1


Prefix letters to indicate the special status of an individual aircraft were not added to the basic designation until 1927. At that time the letter X, as already used by the Army Air Corps, was adopted to identify experimental prototypes or, in some cases, standard models withdrawn from normal service and modified for experimental purposes. In some cases prototype aircraft that had not originally carried the X-prefix when first flown were given it after it was adopted, as in the case of the Boeing FB-5 prototype of 1926 becoming XFB-5 in 1927. For a short period following World War II the letter N as a prefix indicated a first line combat aircraft assigned to a reserve training squadron. At the time of the Korean War to letter Y was added to indicate a prototype aircraft in other than straight experimental status, indicating service test status. Extensive use of prefixes was made after adoption of the unified 1962 system. During World War II, gliders and helicopters were identified as to class by prefix letters in conjunction with otherwise standard designations, e.g. HO2S-1 for Sikorsky's second observation helicopter (H) and LNS-1 Schweitzer's first training glider (L). Although these glider and helicopter letters, as well as others used to identify target drones, were prefixes to the designation, they were widely regarded as part of the two-letter type designation like SB or OS.

Schweizer LNS-1 "Training Glider"

Schweizer LNS-1 "Training Glider"
Status or Class Prefix "L" indicates the a "Training Glider".

(5) Status or Class Prefix
LetterStatus or Class PrefixExample
H

Observation Helicopter.

Sikorsky HO2S-1
L

Training Glider.

Schweitzer LNS-1
N

First line combat aircraft assigned to a reserve training squadron.

 
X

Experimental prototypes, or in some cases, standard models which run from normal service and modified for experimental purposes.

Boeing XFB-5
Y

Prototype aircraft in other than straight experimental status, roughly equivalent to the Army/Air Force letter Y indicating service test status.

 

(6) Special Purpose Suffix1


Suffix letters were used sparingly in the between war years. During World War I and shortlt thereafter they were used as part of the manufacturer's designation to indicate various series of a basic model, special configuration, etc.. The H in N-9H and JN-4H. did not indicate sequential development of those models but variants fitted with the American-built Hispano-Suiza, or Hisso, engine. The letter L in connection with the HS-1L flying-boat similarly identified the Liberty engine version. The Vought VE-7 was normally unarmed; the VE-7G was fitted with guns and the VE-7SF was converted into a single-seater with flotation gear. The first suffix used under the new 1922 system was the letters C to indicate a modification of a standard aeroplane to withstand catapulting when such work was necessary, such as UO-1C for those seaplane versions based on battleships and launched by catapult. Surprisingly, there was no distinction made between land- and seaplane versions of the same Aeroplane. Later, limited use was made of suffix letters A and B following the complete designation to indicate a minor alteration not considered sufficient to change the dash number of the Aeroplane, e.g. F4B-1A for a standard F4B-1 converted to a two-seater for the Assistant Secretary of the Navy and TBD-1A for a standard TBD-1 tested as a seaplane. The earlier NY-1B had been an NY-1 trainer fitted with longer and NY-2 wings.

Suffix letters with special means came into wide use during and after World War II to identify aeroplanes used for other than their designated mission, use of special equipment, etc. Occasionally multiple use of the same letter was somewhat confusing. For example, by World War II the letter A identified in normally unarmed aeroplane fitted with armament (J2F-2A); a machine not normally based on aircraft carriers fitted with an arresting gear (SOC-3A); former Army aircraft, basically similar to standard Navy aircraft, transferred to the Navy (F4B-4A, formerly Army P-12); an amphibious version of a flying-boat (PBY-5A). Other examples of duplicate use are shown below. During World War II separate use was made of some suffix letters to indicate similar of Navy-designed airplanes to the original Army versions, as PBJ-1J for the Navy equivalent to the North American B-25J, used in numbers by the Navy. This was rare, however. The nomenclature applying to some of the following suffixes changed from year to year while the meaning remained essentially the same, such as "Special Search" and then "Special Radar" for a TBM-3D equipped with search radar. In some cases, changes or improvements in equipment produced a second sub-variant of the same type, identified by a number two followed the suffix, as in TBM-3S2 and F3D-2T2.

Consolidated PBY-5A "Catalina"

Consolidated PBY-5A "Catalina"
Special Purpose Suffix "A" indicates the a "Amphibious version".

(6) Special Purpose Sufix
SuffixMeaningExample
AMiscellaneous modificationOL-9A
AArmament on normally unarmed aeroplaneJ2F-2A
AArrester gear on normally none-carrier aircraftSOC-3A
ABuilt for Army or obtained from ArmySBD-3A to A-24
F4B-4A from P-12
AAmphibious versionPBY-5A
ALand-based version of carrier aircraftF4F-3A
BMiscellaneous modificationNY-1B
BSpecial armamentF8F-1B
BBritish version (lend-lease)JRF-6B
CArrester gear addedSNJ-5C
CReinforced for catapultingUO-1C
CCannon armamentSB2C-1C
CNavy equivalent of Army C-series aircraftSBN-2C = AT-7C
CPTrimetrogen cameraTBM-1CP
DDrop tanksF4U-1D
DDrone controlJD-1D
DNavy equivalent of Army de-series aircraftPBJ-1D = B-25D
DSpecial searchTBM-3D
DSpecial radarTBM-3D
E Electronic equipmentSB2C-4E
FFlagship conversionPB2Y-5F
FSpecial power plantP2V-5F
GSearch and rescue (later Coast Guard)PBM-5G
GCoast Guard versionPB-1G
GGun on normally unarmed aircraftUO-1G
GNavy equivalent of Army G-series aircraftPBJ-1G = B-25G
HHospital conversionPB2Y-3H
HNavy equivalent of Army H-series aircraftPBJ-1H = B-25H
JSpecial weather equipmentTBF-1J
JNavy equivalent of Army J-series aircraftPBJ-1J = B-25J
KDrone conversionF6F-5K
LWinterizedTBF-1L
LSearchlight carrierP2V-5L
MMissile launcherF7U-3M
NNight fighterF6F-5N
NAll-whether operationAD-4N
NANight version stripped for day attackAD-4NA
NLNight, winterizedAD-4NL
PPhotographicF7F-3P
QElectronic countermeasuresAD-3Q
RSupport transportR4D-6R
RTransport conversionPBM-3R
SAnti-submarineP5M-2S
TTwo-seat trainer versionF9F-8T
UUtilityTBM-3U
WSpecial searchAF-2W
WEarly warningAD-5W
ZAdministrative versionR4D-5Z

1962 United States Tri-Service Aircraft Designation System


On the 18 September 1962, the United States Department of Defense introduced a unified designation system for the aircraft of the United States armed forces. Prior to this date, each service used their own nomenclature system. The 1962 system was based on the one used by the U.S. Air Force between 1948 and 1962. Since it was introduced the 1962 system has been modified and updated; in 1997 a revised form of the system was released. Almost all aircraft operated by the USAF, United States Navy (USN), United States Coast Guard (USCG) and United States Marine Corps (USMC)) and the United States Army are assigned a designation under this system. Experimental aircraft operated by manufacturers or National Aeronautics and Space Administration (NASA) are also often assigned numbers in the X-series.

References


  1. United States Navy Aircraft since 1911, Gordon Swanborough, Peter M. Bowers, Naval Institute Press, ISBN 0 87021 792 5

U.S. Army MDS evolution, pre-1962 U.S. Navy MDS evolution, pre-1962 Tri-Service MDS evolution, post-1962


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