Totals and company lists below filtered for North America only. Adjust site filter for other regions.

Variants:   O-320-A1A, O-320-A1B, O-320-A2A, O-320-A2B, O-320-A2C, O-320-A2D, O-320-A3A, O-320-A3B, O-320-A3C, O-320-B1A, O-320-B1B, O-320-B2A, O-320-B2B, O-320-B2C, O-320-B2D, O-320-B2E, O-320-B3A, O-320-B3B, O-320-B3C, O-320-C1A, O-320-C1B, O-320-C2A, O-320-C2B, O-320-C2C, O-320-C3A, O-320-C3B, O-320-C3C, O-320-D1A, O-320-D1B, O-320-D1C, O-320-D1D, O-320-D1F, O-320-D2A, O-320-D2B, O-320-D2C, O-320-D2F, O-320-D2G, O-320-D2H, O-320-D2J, D3G, O-320-E1A, O-320-E1B, O-320-E1C, O-320-E1F, O-320-E1J, O-320-E2A, O-320-E2B, O-320-E2C, O-320-E2D, O-320-E2F, O-320-E2G, O-320-E2H, O-320-E3D, O-320-E3H, O-320-H1AD, O-320-H1BD, O-320-H2AD, O-320-H2BD, O-320-H3AD, O-320-H3BD

Grumman GA-7 Cougar

Piper twin piston

U.S.A.

Lycoming Engines

Canada	Aerotec Engines , ATC (Aviation Technical Consultants) , Brampton Flight Centre , Dynamic Aero Aviation , Kovachik Aircraft Services , Pro Aero Aviation , Universal Aero Engines
Mexico	ASI Aerosoluciones Internacionales , Aviones , Especialidades en TurboMaquinaria
U.S.A.	Airworx , Appalachian Aero Group , Heritage Aviation , HOVA Flight Services , Johnston Aircraft Service , Paragon Aircraft Service , Sweet Aviation , Thoroughbred Aviation Maintenance , Twin Cities Aviation

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