1932: Speed Bird Corp (Perth Amboy Title Co),
Keyport NJ,
USA
As receiver of Bird Aircraft Co.
Manufacturer
Spectrum Aircraft Corp
USA
Produced SA-550 Spectrum-One as modified Cessna Skymaster, with changes including lengthened fuselage and rear-mounted turboprop engine (first flown 1983).
Spectrum Aircraft
1984: #3-9531-192nd St, Surrey, B.C., Canada V3T 4W2.
UL builder
Specter Aircraft Inc
1997: 12 South 100 East, PO Box 87, Bancroft, ID 83217, USA.
UL builder
Specialized Aircraft Co
USA
Produced Tri Turbo-3 as triple-turboprop conversion of DC-3.
Spearman, Sam
Dunkirk OH.
USA
In 1959 Sam Spearman built the Spearman S-1.
Spear Aircraft Corp 1929
In 1929 the Spear Aircraft Corp built an aircraft of some kind but details are unknown.
Spartan Aircraft Co
1927: Mid-Continent Aircraft Co, Tulsa OK.
Early in 1927 Spartan G-3 three-seat open-cockpit biplane was built by Mid-Continent Aircraft Company.
Mid-Continent was reorganized as Spartan Aircraft Co in 1928 at Tulsa, Oklahoma.
Built C-3 with Ryan-Siemens engine. Continued to build biplanes but by 1931 was producing series of 4/5-seat cabin monoplanes; also low-wing side-by-side 2-seaters, further developed as C2-60. Spartan Executive 4/5-seat all-metal monoplane of 1936 converted in 1938 to Zeus 2-seat military type; a few of which supplied to China and Mexico. In 1940 U.S. Navy ordered 201 Spartan NP-1 biplane trainers for new Naval Reserve schools.
In 1945 production switched from airplanes to house trailers.
1968: Spartan interests sold to Automation Industries Inc.
1972: Company purchased by National Systems Corp.
1994: Spartan School still active.
Sparrow, W W
Healdron OK.
USA
Built the Sparrow Model 1 monoplane in 1928 but no further details are known.
Sparmann’s Flygplanverkstad
Sweden
In 1936 built S-1 single-seat low-wing monoplane trainer. Several delivered to Swedish Air Force.
All Aero 