(A M Bert) Sisler Aircraft Co,
Bloomington MN.
USA
Airline captain Bert Sisler built and sold Pipit 2-seater, formed Sisler Aircraft Co. and built SF-2 Whistler (EAA award 1973) and later marketed plans for improved version SF-2A Cygnet high-wing 2-seater.
Formed 1938 and until 1940 was manufacturing parts under subcontract for Liore et Olivier, Amiot, and Morane types and overhauling Mureaux aircraft. First postwar production aircraft was S.10 (French version of Arado 396, for which the company had wartime responsibility).
Developed versions were built in quantity. SIPA 901 (derived from S90 of 1947) flew 1948 and ordered by Government for Service de I’Aviation Legere et Sportive. Minijet, flown in 1952, was world’s first all-metal 2-seat light jet; SIPA 300 was more conventional jet trainer.
In 1954 Max Fischl was SIPA test pilot.
Later trainers and light aircraft included Coccinelle 2-seater, and 5-seat turboprop Antilope. Company was associated with production of Caravelle, Mirage, Alouette, and Concorde, and specialised in furnishing and equipping airliners.
Taken over by subsidiary of Aerospatiale.
1931: Sioux Aircraft Co, Sioux City IA, on acquisition of Driggs Aircraft Co.
In 1931, the Sioux Aircraft Corporation bought the Kari-Keen Aircraft Corp assets, changing the name of the Kari-Keen 90 into the Sioux Coupe 90.
1933: Ended operations.
USA
Founded 1995 as partnership between Swearingen Aircraft Incorporated and Sino-Aerospace International Incorporated, to develop and market the SJ30-2 six/seven-seat entry level executive business jet (first flown 1996), developed from Swearingen SJ30.
Zanesville OH.
USA
Built the Sink S-1 in 1931.
1980: Roland Sinfield, Box 513, Morgan, UT 84050, USA.
Built the Honeybee UL
Puyallup WA.
USA
Built the Sindlinger Special #1 in 1959 and designed the Sindlinger HH-1 Hurricane in 1972.
Founded in 1975 as Singapore Aerospace, adding “Technologies” into its name in March 1995; aerospace branch of Singapore Technologies Pte Ltd. and restructured in 1998, since when often referred to as ST Aero. Modified Singapore’s A-4S/S-1 Skyhawk attack jets into A-4SU Super Skyhawks by installation of new engine, minor structural modifications, substantial avionics upgrade and provision to launch Maverick missile, with initial oprational capability achieved 1992. Offered Northrop-Grumman F-5 Tiger II upgrade, has a shareholding in the Eurocopter EC 120 helicopter program, produces Boeing 777 nosewheel doors, and offers aircraft and engine maintenance and repair, and more.
1982: Simpson Midwest Ultralights, Route 1, Box 114, Fisk, Missouri 63940, USA.
UL builder
Wheeling WV.
USA
F.Simpson built the Simpson special in the 1950s, and the Simpson Maverick in 1951.
All Aero 