List of undesignated military aircraft of the United States explained

The United States Army, United States Navy, United States Marine Corps, United States Air Force and its predecessors, and United States Coast Guard operated aircraft when specific alphanumerical designation systems were not in use; these aircraft were referred to by their manufacturers' designations. There were also aircraft in service later that did not receive designations for other reasons, such as foreign military aircraft used for testing or special operations, and civil aircraft purchased off-the-shelf or impressed into service.

For aircraft of the Air Force and its preceding Army air services after the introduction of the 1919 United States Army Air Service aircraft designation system, see the list of United States Air Force aircraft designations (1919–1962). For Navy and Marine Corps aircraft that received designations from 1911–1917 and post–1922 United States Navy aircraft designation system, see the list of United States Navy aircraft designations (pre-1962). For the Army designation system used from 1956 to 1962, after the creation of the Air Force, see 1956 United States Army aircraft designation system. For all United States military aircraft after the implementation of the unified 1962 United States Tri-Service aircraft designation system, see list of United States Tri-Service aircraft designations.

Army

This list includes aircraft operated by the United States Army, Army Signal Corps, and American Expeditionary Forces.

Type	Origin	Class	Role	Introduced	Retired	Notes
Aeromarine M-1	US	Propeller	Trainer	1917		Single-engined piston biplane; evaluated but not accepted
Airco DH.9	UK	Propeller	Bomber	1917		Single-engined piston biplane
Ansaldo SVA	Italy	Propeller	Reconnaissance	1917		Single-engined piston biplane
Avro 504	UK	Propeller	Trainer	1913		Single-engined piston biplane
Bréguet 14	France	Propeller	Bomber/reconnaissance	1918		Single-engined piston biplane
Burgess-Dunne	US	Propeller	Experimental	1914 or 1915		Single-engined tailless piston biplane
Burgess Model F^[1]	US	Propeller	Trainer	1911		Single-engined piston biplane; license-built Wright Model B
Burgess Model H	US	Propeller	Trainer	1912		Single-engined piston biplane
Burgess Model I	US	Propeller	Reconnaissance	1913	1915	Single-engined piston biplane floatplane
Burgess Model J	US	Propeller	Scout	1913	1914	Single-engined piston biplane; license-built Wright Model C
Burgess Model U	US	Propeller	Reconnaissance	1917		Single-engined piston biplane floatplane
Caudron G.3	France	Propeller	Reconnaissance	1917		Single-engined piston biplane
Caudron G.4	France	Propeller	Bomber	1917		Two-engined piston biplane
Caudron R.11	France	Propeller	Fighter	1918		Two-engined piston biplane
Curtiss Model D^[2]	US	Propeller	Trainer	1911	1914	Single-engined piston biplane
Curtiss Model E	US	Propeller	Utility	1911	1914	Single-engined piston biplane floatplane
Curtiss Model F	US	Propeller	Utility	1913		Single-engined piston biplane flying boat
Curtiss Model G	US	Propeller	Scout	1913		Single-engined piston biplane
Curtiss Model J	US	Propeller	Experimental	1914		Single-engined piston biplane
Curtiss Model JN	US	Propeller	Trainer	1915	1927	Single-engined piston biplane
Curtiss Model L^[3]	US	Propeller	Trainer	1916		Single-engined piston triplane
Curtiss Model N	US	Propeller	Trainer	1915		Single-engined piston biplane floatplane
Curtiss Model R	US	Propeller	Utility	1915		Single-engined piston biplane
Curtiss Model S	US	Propeller	Fighter	1917		Single-engined piston triplane; evaluated but not accepted
Dorand AR	France	Propeller	Reconnaissance	1917		Single-engined piston biplane
Farman F.40	France	Propeller	Reconnaissance	1915		Single-engined piston biplane
Farman F.50	France	Propeller	Bomber	1918		Two-engined piston biplane
LWF model V	US	Propeller	Trainer/reconnaissance	1916		Single-engined piston biplane
Martin R	US	Propeller	Reconnaissance	1916
Martin S	US	Propeller	Reconnaissance	1915		Single-engined piston biplane floatplane
Morane-Saulnier AI	France	Propeller	Trainer	1917		Single-engined piston parasol monoplane
Morane-Saulnier P	France	Propeller	Reconnaissance	1914		Single-engined piston parasol monoplane
Nieuport 10	France	Propeller	Trainer	1915		Single-engined piston biplane
Nieuport 11	France	Propeller	Trainer	1916		Single-engined piston biplane
Nieuport 12	France	Propeller	Trainer	1915		Single-engined piston biplane
Nieuport 17	France	Propeller	Trainer	1916		Single-engined piston biplane
Nieuport 21	France	Propeller	Trainer			Single-engined piston biplane
Nieuport 23	France	Propeller	Trainer			Single-engined piston biplane
Nieuport 24	France	Propeller	Trainer			Single-engined piston biplane
Nieuport 27	France	Propeller	Trainer			Single-engined piston biplane
Nieuport 28	France	Propeller	Trainer			Single-engined piston biplane
Nieuport 80	France	Propeller	Trainer			Single-engined piston biplane
Nieuport 81	France	Propeller	Trainer			Single-engined piston biplane
Nieuport 83	France	Propeller	Trainer			Single-engined piston biplane
Royal Aircraft Factory B.E.2	UK	Propeller				Single-engined piston biplane
Royal Aircraft Factory F.E.2	UK	Propeller				Single-engined piston biplane
Royal Aircraft Factory S.E.5	UK	Propeller	Fighter			Single-engined piston biplane
Salmson 2	France	Propeller	Trainer/reconnaissance	1918		Single-engined piston biplane
SIA 7	Italy	Propeller	Bomber/reconnaissance	1917		Single-engined piston biplane
Sopwith Camel	UK	Propeller	Fighter			Single-engined piston biplane
Sopwith Dolphin	UK	Propeller	Fighter			Single-engined piston biplane
Sopwith SOP.1	France	Propeller	Trainer			Single-engined piston biplane; French license-built Sopwith 1½ Strutter
SPAD S.VII	France	Propeller	Trainer	1917		Single-engined piston biplane
SPAD S.XI	France	Propeller	Trainer			Single-engined piston biplane
SPAD S.XIII	France	Propeller	Fighter	1918		Single-engined piston biplane
SPAD S.XVI	France	Propeller	Trainer			Single-engined piston biplane
Standard H-2	US	Propeller	Trainer	1916		Single-engined piston biplane
Standard J	US	Propeller	Trainer	1916		Single-engined piston biplane
Sturtevant S^[4]	US	Propeller	Trainer/reconnaissance	1916		Single-engined piston biplane
Thomas D-5	US	Propeller	Trainer	1915
Voisin VIII	France	Propeller	Trainer			Single-engined piston biplane
Voisin X	France	Propeller	Trainer	1919		Single-engined piston biplane
Wright Model A	US	Propeller	Trainer	1909	1911	Single-engined piston biplane
Wright Model B	US	Propeller	Trainer/reconnaissance	1911	1914	Single-engined piston biplane
Wright Model C	US	Propeller	Scout	1912	1914	Single-engined piston biplane
Wright Model D	US	Propeller	Reconnaissance	1912	1914	Single-engined piston biplane

Air Force

This list includes aircraft operated by the United States Air Force and its predecessors: the United States Army Air Service (USAAS), United States Army Air Corps (USAAC), and United States Army Air Forces (USAAF).

Type	Origin	Class	Role	Introduced	Retired	Notes
Airspeed Oxford	UK	Propeller	Trainer	1942	1945	Two-engined piston monoplane; operated by US units in conjunction with UK Royal Air Force
Albree Pigeon-Fraser	US	Propeller	Fighter	1918		Single-engined piston monoplane
Antonov An-28	Ukraine	Propeller	Transport			Two-engined turboprop monoplane
Avro Anson	UK	Propeller	Transport	1942	1945	Two-engined piston monoplane; operated by US units in conjunction with UK Royal Air Force. Canadian built Ansons operated as AT-20^[5]
Boeing Model 4	US	Propeller	Trainer	1918		Single-engined piston biplane with floats
Consolidated LB-30	US	Propeller	Bomber	1941		Four-engined piston monoplane; UK Liberator B Mk II aircraft requisitioned by USAAF and operated under company designation rather than as B-24
Curtiss 18	US	Propeller	Fighter	1918		Single-engined piston biplane
C-class blimp	US	Airship	Patrol	1921		Two-engined piston blimp; two aircraft transferred from US Navy
Curtiss Model JN	US	Propeller	Trainer	1918	1927	Single-engined piston biplane
Curtiss Model R	US	Propeller	Utility	1918		Single-engined piston biplane
D-class blimp	US	Airship	Patrol	1921		Two-engined piston blimp; four aircraft transferred from US Navy
Dayton-Wright/Fisher DH-4	US	Propeller	Bomber	1918	1932	Single-engined piston biplane; license-built variant of the Airco DH.4
de Havilland Dominie	UK	Propeller	Transport	1942	1945	Two-engined piston biplane; operated by US units in conjunction with UK Royal Air Force
de Havilland Mosquito	UK	Propeller	Bomber	1942	1945	Two-engined piston monoplane; operated by US units in conjunction with UK Royal Air Force
de Havilland Tiger Moth	UK	Propeller	Trainer	1942	1945	Single-engined piston biplane; operated by US units in conjunction with UK Royal Air Force
Douglas Boston	US	Propeller	Bomber	1942	1945	Two-engined piston monoplane; UK version of Douglas A-20 operated in conjunction with UK Royal Air Force
Engineering Division USB-1	US	Propeller	Fighter	1918		Single-engined piston biplane; license-built variant of the Bristol F.2
Engineering Division USB-2	US	Propeller	Fighter	1918		Single-engined piston biplane; license-built variant of the Bristol F.2
Engineering Division USD-9	US	Propeller	Bomber			Single-engined piston biplane; license-built variant of the Airco DH.9
Engineering Division XB-1	US	Propeller	Reconnaissance			Single-engined piston biplane; license-built variant of the Bristol F.2
Fokker D.VII	Germany	Propeller	Trainer	1918		Single-engined piston biplane; obtained as German war reparations, some transferred to US Navy
Hawker Hurricane	UK	Propeller	Fighter	1942	1945	Single-engined piston monoplane; operated by US units in conjunction with UK Royal Air Force
Heinkel HD 22	Germany	Propeller	Utility	1930		Single-engined piston biplane; one purchased for US Military Attaché in Germany
Heinrich Pursuit	US	Propeller	Fighter	1918		Single-engined piston biplane
LWF model V	US	Propeller	Trainer/reconnaissance	1918		Single-engined piston biplane
Martin GMB	US	Propeller	Bomber	1918		Two-engined piston biplane
Mil Mi-171	Russia	Rotorcraft	Transport			Two-engined turboshaft helicopter
Miles Master	UK	Propeller	Trainer/reconnaissance	1942	1945	Single-engined piston monoplane; operated by US units in conjunction with UK Royal Air Force
Morane-Saulnier MS-234^[6]	France	Propeller	Utility	1932	1935	Single-engined piston biplane; one purchased for US Military Attaché in Paris
Orenco D	US	Propeller	Fighter	1919		Single-engined piston biplane; also built by Curtiss
Packard-Le Père LUSAC-11	US	Propeller	Fighter	1918		Single-engined piston biplane
Royal Aircraft Factory S.E.5	UK	Propeller	Fighter	1918		Single-engined piston biplane
Supermarine Spitfire	UK	Propeller	Fighter	1942	1945	Single-engined piston monoplane; operated by US units in conjunction with UK Royal Air Force
Verville VCP	US	Propeller	Fighter/racer	1920		Single-engined piston biplane; later variants designated PW-1 and R-1
Vought VE-7	US	Propeller	Fighter/trainer	1918		Single-engined piston biplane
Vought VE-8	US	Propeller	Fighter/trainer	1918		Single-engined piston biplane
Vought VE-9	US	Propeller	Fighter/trainer	1927		Single-engined piston biplane; improved VE-7

Navy, Marine Corps and Coast Guard

This list includes aircraft operated by the United States Navy, United States Marine Corps and United States Coast Guard.

Aviation in the Marine Corps and Coast Guard has historically been subsidiary to naval aviation, with Marine Corps aircraft being procured by the Navy. Many Coast Guard aircraft have been procured from the Navy or the Air Force and its predecessors, typically carrying designations conforming to equivalent types operated by those services, but the Coast Guard has also independently obtained several aircraft types without a military designation or an equivalent.

The Navy's rigid airships were commissioned as warships and given hull classification symbols, but many of its other lighter-than-air craft never received formal designations. Until the 1940s, Navy blimps were grouped into classes by nominal power and size; within each class, individual aircraft often had significant design variations, and were sometimes sourced from different manufacturers. Spherical crewed free gas balloons used for airship crew training were considered ZF-class aircraft but categorically never received formal designations and were identified only by serial number and volume; similarly, crewed kite balloons and uncrewed barrage balloons were considered ZK-class, but were undesignated.

Type	Origin	Class	Role	Introduced	Retired	Notes
Aeromarine AS	US	Propeller	Scout	1917		Single-engined piston biplane floatplane
Aeromarine 39	US	Propeller	Trainer	1917		Single-engined piston biplane floatplane
Aeromarine 40	US	Propeller	Trainer	1918		Single-engined piston flying boat
Aeromarine 700	US	Propeller	Torpedo bomber	1917		Single-engined piston biplane floatplane
B-class blimp	US	Airship	Patrol	1917		Single-engined piston blimp
Blackburn Swift	UK	Propeller	Torpedo bomber	1921		Single-engined piston biplane; two purchased for evaluation
Boeing B-314	US	Propeller	Transport	1942	1945	Four-engined piston monoplane flying boat; impressed from Pan Am, Army designation of C-98 disregarded
Bristol Bulldog	UK	Propeller	Fighter	1929		Single-engined piston biplane; two purchased for evaluation
C-class blimp	US	Airship	Patrol	1918		Two-engined piston blimp
Caproni Ca.44	Italy	Propeller	Bomber	1918		Three-engined piston bomber
Caspar U.1	Germany	Propeller	Scout	1922		Single-engined piston biplane floatplane; two purchased for evaluation, not accepted for service
Consolidated 21-A	US	Propeller	Trainer	1931	1941	Single-engined piston biplane; single aircraft transferred from USAAC to Coast Guard, later designated N4Y-1
Curtiss-Cox Cactus Kitten	US	Propeller	Racer	1922		Single-engined piston triplane; single aircraft purchased from civil owner
Curtiss 18	US	Propeller	Fighter/racer	1918	1923	Single-engined piston biplane
Curtiss F-5L	US	Propeller	Patrol	1918		Two-engined piston biplane flying boat; evolution of RNAS Felixstowe design, later designated PN
Curtiss H	US	Propeller	Patrol	1916	1928	Two-engined piston biplane flying boat
Curtiss HA	US	Propeller	Fighter	1918		Single-engined piston biplane; none ordered, but test aircraft were retained by Navy
Curtiss HS	US	Propeller	Patrol	1917		Single-engined piston biplane flying boat
Curtiss JN	US	Propeller	Trainer	1917	1926	Single-engined piston biplane
Curtiss Model MF	US	Propeller	Patrol	1918		Single-engined piston biplane flying boat
Curtiss NC	US	Propeller	Patrol	1918		Four-engined piston biplane flying boat
Curtiss N-9	US	Propeller	Reconnaissance/trainer	1917	1926	Single-engined piston biplane floatplane
Curtiss Model R	US	Propeller	Scout/trainer	1918		Single-engined piston biplane; some operated as floatplanes, some used for torpedo bombing trials
D-class blimp	US	Airship	Patrol	1919	1921	Two-engined piston blimp; transferred to US Army
DN-1	US	Airship	Patrol	1916	1917	Two-engined piston blimp; single aircraft, retroactively considered the A-class blimp
de Havilland DH.9A	UK	Propeller	Bomber	1918		Single-engined piston biplane
Detroit ZMC-2	US	Airship	Patrol	1929	1941	Two-engined piston blimp; single aircraft
Donnet-Denhaut flying boat	France	Propeller	Patrol	1918		Single-engined piston biplane flying boat
	Germany	Propeller	Experimental	1920		Single-engined piston monoplane flying boat; one purchased to study its metal construction
Douglas D-558-1 Skystreak	US	Jet	Experimental	1947	1953	Single-engined jet monoplane; high-speed research aircraft operated in conjunction with NACA
Douglas D-558-2 Skyrocket	US	Jet/rocket	Experimental	1948	1956	Hybrid jet/rocket monoplane; high-speed research aircraft operated in conjunction with NACA
E-class blimp	US	Airship	Patrol	1919	1924	Single-engined piston blimp; single aircraft
F-class blimp	US	Airship	Patrol	1919	1923	Single-engined piston blimp; single aircraft
FBA 17HT4	France	Propeller	Trainer	1931		Single-engined piston biplane flying boat; one Schreck-built aircraft purchased by Coast Guard, later license-built in US as Viking OO-1
FBA Type H	France/Italy	Propeller	Patrol	1918		Single-engined piston biplane flying boat
Fokker C.I	Netherlands	Propeller		1921		Single-engined piston biplane; three purchased for Marine Corps, originally built in 1918 for Germany but never delivered
Fokker D.VII	Germany	Propeller	Trainer	1918	1924	Single-engined piston biplane; German war reparations transferred from US Army
Franklin PS-2	US	Glider	Trainer	1930s?		Monoplane glider
Gallaudet D-1	US	Propeller	Experimental	1918	1918	Two-engined piston biplane floatplane
Gallaudet D-4	US	Propeller	Experimental	1918	1918	Single-engined piston biplane floatplane; development of Gallaudet D-1
G-class blimp	US	Airship	Patrol/trainer	1935	1959	Two-engined piston blimp; later designated ZNN-G
General Aviation FLB^[7]	US	Propeller	Search and rescue	1932		Two-engined piston monoplane flying boat; operated only by Coast Guard, later designated PJ
H-class blimp	US	Airship	Patrol/trainer	1921	1921	Single-engined piston blimp
Hanriot HD.1	France	Propeller	Fighter	1918		Single-engined piston biplane; landplane conversions from HD.2 floatplanes
Hanriot HD.2	France	Propeller	Fighter	1918		Single-engined piston biplane floatplane
J-class blimp	US	Airship	Patrol/trainer	1922	1940	Two-engined piston blimp
Junkers-Larsen JL-6	Germany	Propeller	Experimental	1920?		Single-engined piston monoplane floatplane; three purchased for evaluation
K-class blimp	US	Airship	Patrol/trainer	1931		Two-engined piston blimp; first aircraft (K-1) differed substantially from others; later designated ZNP-K
L-class blimp	US	Airship	Trainer	1937		Two-engined piston blimp; later designated ZNN-L
Levy-Lepen HB2	France	Propeller	Patrol	1918		Single-engined piston biplane flying boat
Loening LS	US	Propeller	Reconnaissance/racer	1918		Single-engined piston monoplane; floatplane version of Loening M-8
Loening M-8	US	Propeller	Reconnaissance/racer	1918		Single-engined piston monoplane
Macchi M.5	Italy	Propeller	Fighter	1918		Single-engined piston biplane flying boat
Macchi M.16	Italy	Propeller	Scout	1922		Single-engined piston biplane floatplane; three purchased for evaluation, not accepted for service
Martin M-130	US	Propeller	Transport	1942	1945	Four-engined piston monoplane flying boat; impressed from Pan Am
Morane-Saulnier AR-1	France	Propeller	Trainer	1921		Single-engined piston parasol monoplane
Naval Aircraft Factory N-1	US	Propeller	Patrol	1918	1918	Single-engined piston biplane floatplane
Naval Aircraft Factory PT	US	Propeller	Torpedo bomber	1922		Single-engined piston biplane floatplane; built largely from Curtiss HS and R-6 spare parts
Naval Aircraft Factory SA	US	Propeller	Scout	1919	1919	Single-engined piston monoplane
Naval Aircraft Factory TF	US	Propeller	Fighter	1918	1923	Two-engined piston biplane flying boat
Naval Aircraft Factory TG	US	Propeller	Trainer	1922		Single-engined piston biplane floatplane
Naval Aircraft Factory TS	US	Propeller	Fighter	1922		Single-engined piston biplane; some operated as floatplanes, later designated F4C
Nieuport 28	France	Propeller	Experimental	1919		Single-engined piston biplane; transferred after WWI from US Army and used for ship platform launching trials
NS class airship	UK	Airship	Patrol	1918		Two-engined piston blimp; single aircraft
O-1^[8]	Italy	Airship	Experimental	1919	1921–1922?	Two-engined piston airship; single aircraft
Parnall Panther	UK	Propeller	Fighter	1919		Single-engined piston biplane
Romeo Ro.1	Italy	Propeller	Utility	1928		Single-engined piston biplane; one purchased for US Naval Attaché in Rome
Royal Aircraft Factory S.E.5A	UK	Propeller	Fighter	1918		Single-engined piston biplane
RRG Prüfling	Germany	Glider	Experimental	1930?		Monoplane glider; one purchased from US civil flight school for airship launch tests conducted in early 1930
Seversky NF-1^[9]	US	Propeller	Fighter	1935		Single-engined piston monoplane; none ordered, but the test aircraft was retained by the Navy; called FN-1 by some sources
Sopwith Baby	UK	Propeller	Scout	1917	1918	Single-engined piston biplane floatplane; at least seven evaluated, not accepted for service
Sopwith Camel	UK	Propeller	Fighter	1917		Single-engined piston biplane
Sopwith 1½ Strutter	UK	Propeller	Reconnaissance	1918		Single-engined piston biplane
SS class airship	UK	Airship	Patrol	1918		Single-engined piston blimp
SST class airship	UK	Airship	Patrol	1918		Two-engined piston blimp; single aircraft
SSZ class airship	UK	Airship	Patrol	1918		Single-engined piston blimp
TC-class blimp	US	Airship	Patrol	1938	1943	Two-engined piston blimp; two aircraft transferred from US Army, never given naval designations
Tellier flying boat	France	Propeller	Patrol	1917		Single-engined piston biplane flying boat
Thomas-Morse MB-3	US	Propeller	Trainer	1921		Single-engined piston biplane; transferred from US Army for use by Marine Corps
Thomas-Morse S-4	US	Propeller	Trainer	1917		Single-engined piston biplane
Thomas-Morse S-5	US	Propeller	Scout	1917		Single-engined piston biplane; diverted from US Army S-4 order and refitted as floatplanes
Thomas-Morse SH-4	US	Propeller	Reconnaissance/trainer	1917		Single-engined piston biplane floatplane
Vickers Viking	US	Propeller	Experimental	1921		Single-engined piston biplane amphibian
Vought VE-7	US	Propeller	Fighter/trainer	1918		Single-engined piston biplane; some operated as floatplanes
Vought VE-9	US	Propeller	Reconnaissance	1918		Single-engined piston biplane; some operated as floatplanes

References

Bibliography

Book: Andrade, John M.. U.S. Military Aircraft Designations and Serials Since 1909. Midland Counties Publications. 1979. 0-904597-22-9.
Book: Fahey, James C.. James Charles Fahey. 1946. U.S. Army Aircraft 1908–1946.
Book: Francillon, René . 1988 . McDonnell Douglas Aircraft Since 1920 . I . Annapolis, Maryland . Naval Institute Press . 0-87021-428-4 .
Grossnik . Roy A. . 1987 . Kite Balloons to Airships... the Navy's Lighter-than-Air Experience . Deputy Chief of Naval Operations (Air Warfare) and Commander, Naval Air Systems Command, United States Navy . 29 September 2021 .
Book: Swanborough . Gordon . Bowers . Peter M. . 1976 . United States Navy Aircraft since 1911 . 2nd . Annapolis, Maryland . Naval Institute Press . 0-87021-968-5.
Book: Trimble, William F. . 1990 . Wings for the Navy: A History of the Naval Aircraft Factory, 1917-1956 . 1st . Annapolis, Maryland . Naval Institute Press . 0-87021-663-5.
Installations and USAF Combat Units in the United Kingdom, 1942–1945, Revised and Expanded Edition. Office of History . Headquarters Third Air Force, United States Air Forces in Europe. February 1985 . https://web.archive.org/web/20110924033605/http://www.afhra.af.mil/shared/media/document/AFD-090210-008.pdf . 24 September 2011 . 12 October 2021 .
Web site: World Air Forces Directory 2021 . FlightGlobal . 4 December 2020 . flightglobal.com . 14 October 2021 . .

External links

Notes and References

Web site: Burgess . 2022-05-12 . www.aerofiles.com.
Web site: Wacker . Bill . 2008-11-19 . Curtiss # to J . 2022-05-16 . www.aerofiles.com.
Web site: Curtiss L-Z . 2022-05-16 . www.aerofiles.com.
Web site: Sturtevant Sturtevant Aeroplane Co. . 2022-05-16 . www.sturtevantfan.com.
Web site: Baugher. Joe. October 9, 2021. 1943 USAAF Serial Numbers (43-5109 to 43-52437).
Web site: Baugher. Joe. 1930-1937 USAAC Serial Numbers. joebaugher.com. 25 September 2021 . 28 October 2021.
Web site: Baugher. Joe. US Coast Guard Aircraft Serial Numbers. joebaugher.com. 25 September 2021 . 26 October 2021.
Web site: Baugher. Joe. US Navy and US Marine Corps BuNos, First Series (A51 to A6001). joebaugher.com. 28 August 2021 . 10 November 2021.
Web site: Baugher. Joe. Seversky NF-1. joebaugher.com. 25 December 1999 . 21 October 2021.