The Stearman C3 was an American built biplane aircraft of the 1920s.
The C3 was a rugged biplane with simple straight wings, a tough undercarriage with oleo shock absorbers and two open cockpits with the pilot in the rear and two side-by-side passenger seats in the front.
In fact, it was a slightly modified version of the earlier model C2 aircraft.
Changes included an increased volume oil tank and larger sized baggage compartment.
Introduced in 1928, the C3 was powered by a variety of engines of between 128 hp and 225 hp, each version having its own designation.
The last version of the C3 was the C3R which had several external differences including a cut out in the aft portion of the wing centre section for improved pilot visibility, a headrest in the aft cockpit, and slightly increased chord of the rudder and vertical stabilizer.
The Peruvian air force used the C3 in various roles, the most common use was as a trainer.
Although there were several versions of the C3, most were either the C3B and the C3R.
A few C3s were approved for float operations.
First of the C series powered by a Curtiss OX-5, later re-engined with a 240 hp (179 kW) Menasco-Salmson radial as the C1X.
Four aircraft similar to the C1, with the radiator mounted underneath, hydraulic shock absorbers and dual controls.
Variously powered by 90 hp (67 kW) Curtiss OX-5, Wright-Hisso A, Wright Whirlwind and Menasco-Salmson radial engine.
C3B Sport Commercial
220 hp (164 kW) Wright J5 radial engine.
150 hp (112 kW) Wright Martin/Hispano Suiza E engine.
180 hp (134 kW) Wright Martin/Hispano Suiza E engine.
190 hp (142 kW) Wright Martin/Hispano Suiza E2 engine
190 hp (142 kW) Wright Martin/Hispano Suiza E3 engine.
190 hp (142 kW) Wright Martin/Hispano Suiza E4 engine.
260 hp (194 kW) Menasco-Salmson air-cooled engine.
160 hp (119 kW) Curtiss C6 engine.
128 hp (95 kW) Siemens-Halske Sh 12.
130 hp (97 kW) Comet 7D radial engine.
1 built, later converted to C3B.
C3B with forward cockpit enclosed for mail carrying.
220 hp (164 kW) Wright J5 Whirlwind radial engine.