Piston Single Engine
- Aircoupe
- AMD
- American Champion
- Antonov
- Aviat
- Beechcraft
- Bellanca
- Boeing/Stearman
- Bolkow
- Cessna
- Champion
- Christen
- Cirrus
- Columbia
- Commander
- Cubcrafters
- Dehavilland
- Diamond
- Ercoupe
- Ercoupe/Forney
- Extra Flugzeugbau
- Fairchild
- FFA
- Found Aircraft Co
- Gee Bee
- General Avia
- Gippsaero
- Globe
- Great Lakes
- Grumman/American General
- Helio
- Howard
- Inziative Industriali Italiane
- Interstate
- Laverda
- Liberty Aerospace
- Luscombe
- Maule
- MBB
- Meyers
- Monocoupe
- Mooney
- Morane-Saulnier
- Mudry
- Navion
- Paramount
- Percival
- Piper
- Pitts
- PZL
- Reims
- Robin
- Rockwell
- Siai Marchetti
- Socata
- Stinson
- Symphony Aircraft
- Taylorcraft
- Tecnam
- Travel Air
- Waco
- Yakovlev
- Zlin
