Oakland to Ö-UF
Oakland (USA) — Oakland Airmotive Company, Oakland, California
Oakley (UK) — Oakley & Co. Ltd., Ilford, England (1917)
Oberlerchner (Austria) — Josef Oberlerchner Holzindustrie, Spittal an der Drau, Austria (1941-1961)
Occidental (USA) — Occidental Aircraft Corporation, Washington, DC (1970)
Oddin, Bradbury & Cull (UK) — Oddin, Bradbury & Cull, Southhampton (Eastleigh), England
OEC (USA) — see Orenco
Oeffag (Austria) — see Öffag
Oertz-Werke (Germany) — Oertz-Werke GmbH, Hamburg Reiherstieg (1910-1916)
Öffah (Austria) — Österreichische Flugzeugfabrik AG, Weier-Neustadt (1915-1920)
Oficinas Gerair (Portugal) — see OGMA
ÖFW (Austria) — Österreichische Flugzeugwerke GmbH (1958-1959)
Ogden (USA) — Ogden Aeronautical Corporation, Inglewood, California (1929)
OGMA (Portugal) — Oficinas Gerais de Material Aeronáutico (1918); Indústria Aeronáutica de Portugal, S.A, Alverca do Ribatejo, Portugal (1994)
Ohm-Stoppelbeim (USA) — Richard V. Ohm and Gordon Stoppelbeim (1950)
Ohnishi (Japan) — Yuichi Ohnishi, Tatebayashi, Gummi Prefecture (1967)
Okamura (Japan) — Okamura Siesakusho KK, branch factory of Nihon (1953)
OKL (Poland) — The Osrodek Konstrukcji Lotniczych, aircraft construction center was setup at WSK Warsaw-Okecie on 12 October 1957 to take over all Polish aircraft design, which was previously handled by IL. Main projects included the MD-12 20-passenger airliner (July 1959) and the TS-11 “Iskra” jet trainer, plus many light aircraft, but excluding the designs by WSK Mielec and Swidnik.
OKO (USSR) — Bureau of Special Construction, Kiev (headed by Tyrov)
Oldfield (USA) — Andrew Oldfield (1962)
Oldfield (USA) — Barney Oldfield Aircraft Company
Oliver (1998) — Oliver, Robert K.
Olkhovskii (Russia) — Capt. Vladimir M. Olkhovskii, aka Ol'khovsky (1917)
Olympic Ultralights (USA) — Olympic Ultralights LLC
OM (Italy) — Officine Moncenisio, Condove, Turin (1914-1918)
OMF (Germany) — Ostmecklenburgische Flugzeugbau GmbH (OMF Aircraft)
OMAC (USA) — OMAC Inc., Reno, Nevada (1981-1989)
Omareal (Brazil) — Oficina de Manetençao e Recuperaç de Aviones
Omega (USA) — Omega Aircraft Corporation (1953-1964)
Omnionics (USA) — Omnionics, Merritt Island, Florida (1965)
Omnipol (Czechoslovakia) — Omnipol Foreign Trade Corporation , 1952)
Omni Titan (USA) — Omni Titan Corporation
Omni Weld (USA) — Omni Weld Inc. (1983)
OMOS (USSR) — Department of Experimental Marine Aircraft, Leningrad (1925)
O'Neil (USA) — O'Neil Airplane Company, Carlyle, Illinois (1962)
Ong (USA) — Ong Aircraft Corporation, Kansas City (1936)
On Mark (USA) — On Mark Engineering Company was formed in 1954 at Van Nuys, California, mainly to produce rebuilt B-26 versions: the “Marketeer” executive transport, and the “Marksman” pressurized variant, and the B-26K “Counter Invader” attack bomber. Also built the first B377PG for Aero Spacelines.
ONTZ (Russia/Siberia) — Omsk scientific-technical factory in process of privatization 1992, produces An-72 and An-74 aircraft and parts.
OOS (USSR) — Section for experimental aircraft construction formed 1930 at VVA under Zhukovskii to manage existing Stal (steel) programs for aircraft with minimal aluminum. Stal-2 and Stal-3 were high-wing cabin aircraft, Stal-5 flying wing, Stal-11 high-speed low-wing light transport and “Aviatourist” small-twin-engine racer of mainly Bakelite-ply.
Option Air (USA) — Option Air Reno
Opel-Sander (Germany) — First rocket aircraft was primary glider called RAK 1, fitted with 20 small standard powder rockets as publicity stunt for car-maker Opel (30 September 1929).
Operations Ability (UK) — Formed to convert P.149D trainer for pilot 85% paralyzed. (1984)
OPO (USSR) — OPO-1 to OPO-4 were experimental sections within OMOS from 1927
Optica (UK) — Optica Industries Ltd.
Orca (UK) — Orca Aircraft, Bodman, took over SAH-1 trainer in buy-out of Trago Mills (Aircraft Division). Excellent aircraft, in liquidation 1989, but now see UTVA.
Ord-Hume (UK) — Arthur Ord-Hume helped redesign Luton Minor and Major, built or restored 11 aircraft, produced English plans for GY.20 “Minicab” and produced all-wood O-H.7 ultralight.
Orenco (Ordnance Engineering Corporation) (USA) — The Ordnance Engineering Corporation was founded in mid-1916 in New York City, with the plant located at Baldwin, Long Island, to build aircraft for the US Army and other customers. The “Type A” side-by-side , trainer (February 1917) found no takers. In June or July 1917 Etienne Dormoy, the experienced SPAD designer and member of the Mission to USA, design the “Type B” fighter (30 1918), which was built in small numbers. This led to three versions of the “Type C”, including the “Type D” which was powered by a 300-hp Hispano engine (January 1919). The “Type D” was an outstanding fighter, but Curtiss underbid and got the contract for fifty aircraft. To avoid confusion with the Army Ordnance Branch, the company at this point, coined the acronym “Orenco”. Attempts to develop the “Type D” further led nowhere and neither did six additional planned the postwar models.
Orlando (USA) — Orlando Helicopter Airways was formed in 1964 at Sanford, Florida, to update and remanufacture Sikorsky helicopters. Seven versions of the S-55, including Mi-24 look-alike an three versions of the S-58 were produced.
Orlican (Czech Republic) — Orlican Národní Podnik
Orliňski (Poland) — Roman Orliňski's RO-7 Orlik (Eaglet) sport monoplane first flew on 22 February 1987, and its plans were marketed.
Orlogsvaerftet (Denmark) — The Royal Dockyard at Copenhagen built the Hawker “Dankok”, the Fokker “C.V” and the Farman “Jabiru” transport, as well as the locally designed HM.1 reconnaissance seaplane, which was really a Heinkel He.8 under another name.
Orlowski (USA) — Orlowski (1950)
Orta Saint-Hubert (Belgium) — Founded in 1919 as the St. Hubert flying school by Captain José Orta, manufacturing about 25 light aircraft of five types from 1924 to 1933.
OSA (Italy) — Officina Sommese Aeronautica produced several light aircraft in the 1930s. The most notable being the OSA.135 side-by-side low-wing cabin tourer with a 130-hp “Alpha 110/1” in January 1937.
Oskbes-Mai (Russia) — Otraslevoe Spetsialnoe Konstruktorskoe Byuro Eksperimentalnogo Samolyotostroeniya-Moskovskogo Aviatsionnogo Instituta
Osprey (USA) — Osprey Aircraft, Sacramento, California, was formed to market plans of the Osprey I two-seat flying-boat with a 90-hp Continental pusher engine. The aircraft was first flown in August of 1970 and was designed and built by the interior decorator, George Pereira. The aircraft was successfully evaluated by the U.S. Navy has the X-28A in 1971. It was subsequently developed into the “Osprey II” in April 1973. Over 1,480 sets of plans were sold in 50 countries, 300+ aircraft being flown by 1992. The GP4 high-performance long-range two-seat landplane was added in 1984.
Osrodek (Poland) — see OKL
Österreichische (Austria) — see Öffag; ÖFW; Ö-UF
Österreichische-Ungarische Albatros Flugzeug Werke (Austro-Hungarian Empire) — (1914-1917)
OTD (Germany) — see Dornier-Werke GmbH
Ottawa (Canada) — Ottawa Car and Aircraft Ltd. built AW “Siskin” and “Atlas”, Avro “Prefect” and Avro “626”, AS “Lynx” and “Cheetah” engine and, during WWII, assisted production of “Anson”, “Hampden” and “Hurricane”.
Otto (Germany) — Gustav Otto Flugmaschinenwerke built for the German army six M1912 pusher observation biplanes, plus a small number of other aircraft.
Ouest-Aviation (France) — Formed by changing the name of SNCASO on 1 September 1956. The main product was the SO.4050 “Vatour”. Other aircraft included the SO.1221 “Djinn” and the SO.9050 “Trident”. The firm made the wings and fuselage for the Mystère II and Mystère IVA, and Martin-Baker ejection seats under license. They also acted as agent and parent-firm for the French Vertol H-21C, but did not take up the license option. They were amalgamated with Sud-Est to form Sud-Aviation on 1 March 1957.
Ö-UF (Austria) — Österreichische-Ungärische Flugaeugfabrik was a wartime subsidiary of Aviatik, building the German parent's Aviatik B.I and Aviatik B.II. They also produced a single-seat version of the C.I (so-called Berg-Scout, from designer Julius Berg), with 700 and possibly 1,200 aircraft produced from 1917-1918.
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