1922 United States Navy aircraft designation system

For U.S. Navy aircraft designation systems prior to 1922, see List of United States Navy aircraft designations (pre-1962).

From 1922 until 1962, the United States Navy, the United States Marine Corps and the United States Coast Guard used a system to designate their aircraft that included information about a craft's role and its manufacturer. For a listing of all such designations, see the list of United States Navy aircraft designations (pre-1962).

Background

For more detail on the 1911 and 1914 systems, see List of United States Navy aircraft designations (pre-1962).

The U.S. Navy used two sequential designation systems prior to 1922, neither of which directly conveyed information about the aircraft's mission. The first system, adopted in 1911, consisted of a single letter signifying the manufacturer and aircraft class followed by sequential numbers for individual aircraft.

In March 1914, the navy introduced a new system similar to hull classification symbols for warships, with an alphabetical code for the aircraft class followed by sequential numbers for individual aircraft, with the designation of the first aircraft of a particular design being used as the type designation for similar aircraft; for instance, aircraft similar to AH-8 were referred to as AH-8 type. The second system was abandoned in May 1917 without replacement; the navy began using the manufacturers' model designations.

The 1922 system

On 29 March 1922, a new designation system was introduced with a reorganization of U.S. naval aviation under the Bureau of Aeronautics. The system conveyed its information in the form:

(Mission)(Design Number)(Manufacturer)-(Subtype)(Minor Modification)

For example, F4U-1A referred to a minor modification (A) to the first major subtype (1) of Chance-Vought's (U) fourth (4) fighter (F) design.

For the first few years after the system was introduced, the manufacturer's letter and the mission letter were sometimes reversed. If it was the manufacturer's first design for that particular mission, there was no number before the manufacturer letter.

Mission

The mission of the aircraft was designated by a one or two letter code. This code would also indicate whether the craft was a glider (L), helicopter (H) or lighter-than-air (Z). Duplicated codes were not in use at the same time.

Design number

In cases where an aircraft was its manufacturer's first design for a particular mission, the 1 would not be written. Thus the Consolidated Catalina patrol aircraft was the PBY, not PB1Y, and the McDonnell Phantom was FH, not F1H.

Manufacturer

The codes used to denote manufacturers were not unique to a single company as they were reassigned, usually when the company had either ceased operations or had not produced an aircraft for the Navy for a considerable period of time. Additionally, aircraft built under license received a separate design number than the aircraft produced by the designing company. For example, Goodyear produced the Vought F4U Corsair as the FG and the Grumman TBF Avenger torpedo bomber was produced by General Motors as the TBM. Foreign aircraft generally did not receive a designation under this system unless they were to be built under license in the United States, or were built for use in the United States, such as aircraft built in Canada, including the Fairchild-Canada SBF Helldiver and Canadian-Vickers PBV Catalina.

Minor modifications

Letters were occasionally appended after the design number to denote minor modifications to the subtype; e.g. adding 'N' to the Grumman F6F-5 Hellcat designated the radar-equipped night fighter version of that model: F6F-5N.

The first suffix to be used was "C" for aircraft modified for launching from an aircraft catapult on a battleship. Before World War II, the suffixes were often consecutive, with many lacking defined meanings, and they were not often used. During the war, they came into wide use and were given defined meanings, but letters were duplicated and their meanings were inconsistent. For instance, the letter "A" was used both for deletion of the tailhook from an aircraft normally so equipped (e.g. the Douglas SBD-5A, used from land bases) and for addition of this equipment to a land-based aircraft; for amphibious versions of flying boats (e.g. the Consolidated PBY-5A); for armament added to a normally unarmed type; and for miscellaneous modifications (e.g. the aforementioned F4U-1A). The addition of a tailhook to a land-based aircraft could also be designated with a "C", e.g. the North American SNJ-5C, repeating the letter previously used for catapult-launched aircraft.

A significant wartime exception to this system was existing United States Army Air Forces (USAAF) types adopted by the Navy, such as the North American B-25 Mitchell; in some such cases, the minor modification letter simply mirrored the USAAF sub-type letter, e.g. the B-25H became the PBJ-1H.

End of the system

In 1962, the Department of Defense unified its aircraft designation systems along the lines of the Air Force's system. Many Navy aircraft then in service were redesignated. For many planes, the mission letters and design numbers were retained, as the Douglas AD Skyraider became the A-1 and the McDonnell F4H Phantom II became the F-4. Some aircraft design numbers were not retained, like the North American Vigilante, which was redesignated from A3J to A-5 (the A-3 designation having already been assigned to the A-3 Skywarrior).

Similar systems

A very similar system, the short system, was adopted by the Imperial Japanese Navy Air Service in the late 1920s that differed only in the use of the 1 for the first assigned type, having letters assigned to match Japanese aircraft and manufacturers, and not having a different number series for each manufacturer, meaning that the A6M was the sixth model of single engine fighter (A), adopted into Imperial Navy service, which was built by Mitsubishi (M), as opposed to the US system in which it would have meant the sixth fighter model specifically from Mitsubishi.

System examples

Aircraft type codes Code Type Example Period A Attack AD 1946–1962 A Ambulance AE 1943–1962 B Bomber BG 1931–1946 BD Bomber - Drone BDR 1944 BF Bomber - Fighter BF2C 1934–1937 BT Bomber - Torpedo BTD 1942–1945 DS Drone - Antisubmarine DSN 1959–1962 F Fighter F2A 1922–1962 G Aerial Refueling Tanker GV 1958–1962 G Transport, Single Engined GK 1939–1941 H Hospital HE 1929–1942 H Air-Sea Rescue not used 1946–1962 HC Helicopter - Crane HCH 1952–1955 HJ Helicopter - Utility HJP 1944–1949 HN Helicopter - Training HNS 1944–1948 HO Helicopter - Observation HO4S 1944–1962 HR Helicopter - Transport HRB 1944–1962 HS Helicopter - anti-Submarine HSS 1951–1962 HT Helicopter - Training HTK 1948–1962 HU Helicopter - Utility HUP 1950–1962 J Utility JB 1928–1955 JR Utility transport JRM 1935–1955 KD Drone KDA 1945–1962 KU Utility Drone KUM 1945 LB Glider Bomb (unmanned) LBD 1941–1945 LN Glider - Trainer LNE 1941–1945 LR Glider - Transport LRW 1941–1945 M Marine Expeditionary EM 1922–1923 N Trainer N3N 1922–1946 O Observation O2U 1922–1962 OS Observation Scout OS2U 1935–1945 P Patrol PV 1922–1962 PT Patrol Torpedo not used 1922 PB Patrol Bomber PBY 1935–1962 PTB Patrol Torpedo Bomber PTBH 1937–1938 P Pursuit WP 1922–1923 R Racer R2C 1922–1928 R Transport R4D 1931–1962 RO Rotocycle RON 1954–1959 S Scout SC 1922–1946 S anti-Submarine S2F 1946–1962 SB Scout Bomber (dive bomber) SBD 1934–1946 SN Scout Trainer SNJ 1939–1946 SO Scout Observation SOC 1934–1946 T Torpedo DT 1922–1935 T Transport TA 1927–1930 T Trainer T2J 1946–1962 TB Torpedo Bomber TBD 1935–1946 TD Target Drone TDC 1942–1946 TS Torpedo Scout TSF 1943–1946 U Utility UF 1955–1962 W airborne early Warning WF 1952–1962 ZP Patrol Airship ZPG 1947–1962 ZS Scout Airship ZS2G 1954–1962 ZT Training Airship ZTG 1947–1962 ZW airborne early Warning Airship ZWG 1952–1962

Aircraft manufacturer codes Code Name Example Period A Allied XLRA 1943 A Atlantic/General Aviation XFA-1 1927–1932 A Brewster F2A 1935–1943 A Noorduyn JA-1 1946 B Bee Line BR 1922 B Boeing F2B 1923–1962 B Beechcraft GB 1937–1962 B Budd RB 1942–1944 BS Blackburn (UK) BST 1922 C Curtiss and Curtiss-Wright R4C 1922–1962 C Culver TDC 1941–1946 C Cessna JRC 1943–1951 C de Havilland Canada UC 1955–1962 D Douglas R2D 1922–1962 D McDonnell FD 1942–1946 D Radioplane TDD 1943-1948 D Frankfort TD3D 1945-1946 DW Dayton-Wright SDW 1923 E Bellanca XRE 1931–1937 E Cessna OE 1951–1962 E Detroit TE 1928 E Edo OSE 1943–1962 E Elias EM 1922–1924 E Hiller YROE 1948–1962 E Piper AE-1 1941–1945 E Pratt-Read/Gould LNE 1942–1945 F Grumman SF 1931–1962 F Fairchild-Canada SBF 1942–1945 F Fokker (Netherlands) FT 1922 G A.G.A. (originally Pitcairn) XLRG 1941–1942 G Eberhart XF2G 1927–1928 G Gallaudet not used 1922–1923 G Globe KDG 1946–1959 G Goodyear F2G 1942–1962 G Great Lakes BG 1929–1935 H Hall-Aluminum PH 1928–1937 HP Handley Page (UK) HPS 1922–1923 H Howard GH 1941–1944 H Huff-Daland HO 1922–1927 H McDonnell F3H 1946–1962 H Snead LRH 1942 H Stearman-Hammond JH 1937–1939 J Berliner-Joyce OJ 1929–1935 J General Aviation PJ 1935–1937 J North American SNJ 1937–1962 JL Junkers-Larson JL 1922 K Fairchild/Kreider-Reisner XR2K 1935, 1937-1942 K Kaiser-Fleetwings XBTK 1948–1950 K Kaman HTK/HOK/HUK 1950–1962 K Keystone PK 1927–1930 K Kinner XRK 1935–1936 K J. V. Martin KF 1922–1924 K Nash-Kelvinator JRK 1942 L Bell XFL 1939–1962 L Columbia XJL 1944–1946 L Langley XNL 1940 L Loening OL 1923–1933 L L.W.F. not used 1922 M Martin JRM 1922–1962 M General Motors (Eastern) TBM 1942–1945 M McCulloch HUM 1951–1952 N Gyrodyne Company DSN 1960 N Naval Aircraft Factory N3N 1922–1962 O Lockheed R2O 1931–1942 O Piper UO 1955–1962 O Viking OO 1923–1941 P Piasecki/P.V./Vertol HUP 1946–1962 P Piper LNP 1941–1945 P Pitcairn OP 1931–1932 P Spartan NP 1940–1941 PL Parnall (UK) PL? 1922 Q Bristol XLRQ 1941–1943 Q Fairchild J2Q 1928–1962 Q Stinson XR3Q 1934–1936 R Aeronca LNR 1942–1946 R American Aviation unk. designation 1942 R Brunswick drone, unk. designation 1942–1943 R Ford JR/RR 1927–1932 R Interstate TDR 1942–1945 R Maxson NR 1939–1940 R Radioplane KD2R 1940–1952 R Ryan FR 1948–1962 RO Meridionali Romeo (Italy) unk. designation 1933 S Aeromarine AS 1922 S Schweizer LNS 1941 S Sikorsky JRS 1928–1962 S Sperry Drone, unk. designation 1950 S Stearman N2S 1934–1945 S Stout ST 1922 S Supermarine FS reserved, not used 1943 T New Standard NT 1930–1934 T Northrop F2T 1933-1937 & 1944-1962 T Taylorcraft LBT 1942–1946 T Temco KDT 1955–1962 T Thomas-Morse maybe not used 1922 T Timm N2T 1941–1943 U Chance-Vought F4U 1922–1962 V Canadian Vickers PBV 1941–1945 V Lockheed P2V 1942–1962 V Vultee SNV 1943–1945 VK Vickers Viking unk. designation 1923 W Canadian Car & Foundry SBW 1942–1945 W Waco XJW 1934–1945 W Willys-Overland unk. designation 1948–1962 W Wright NW 1922–1926 X Cox-Klemin XS 1922–1924 Y Consolidated PBY 1926–1954 Y Stinson OY 1942–1950 Y Convair F2Y 1954–1962 Z Wilford/Pennsylvania XOZ 1933–1934

See also

• United States Department of Defense aerospace vehicle designation
• United States military aircraft designation systems
• British military aircraft designation systems
• Hull classification symbol
• Italian Armed Forces aircraft designation system
• Lists of military aircraft of the United States
• List of United States Navy aircraft designations (pre-1962)
• RLM aircraft designation system
• Soviet Union military aircraft designation systems
• Japanese military aircraft designation systems
• 1962 United States Tri-Service aircraft designation system
• 1962 United States Tri-Service missile and drone designation system

References

Bibliography

• Swanborough, Gordon; Bowers, Peter M. (1976). United States Navy Aircraft since 1911 (2nd ed.). Annapolis, Maryland: Naval Institute Press. ISBN 0-87021-968-5.

External links

• Designation-Systems.net: Aircraft Redesignations in 1962
• hazegray.org: Designation Systems