The Ranger L-440 (company designation 6-440C) are six-cylinder inline inverted air-cooled aero-engines produced by the Ranger Aircraft Engine Division of the Fairchild Engine and Airplane Corporation of Farmingdale, New York, United States. The engine was mainly produced for Fairchild's family of training aircraft in the mid-1930s.
6-440C-2175hp variant with a 6:1 compression ratio.
6-440C-3180hp variant with a 6.2:1 compression ratio.
6-440C-4190hp variant with a 6.8:1 compression ratio.
6-440C-5200hp variant with a 7.5:1 compression ratio.
Fairchild PT-19/26Falconar SAL MustangGrumman WidgeonMaestranza Central de Aviación HF XX-02St. Louis PT-LM-4Data from
Type: Six-cylinder inline inverted air-cooledBore: 4 1⁄8 in (104.8 mm)Stroke: 5 1⁄2 in (139.7 mm)Displacement: 441 in³ (7.2 litres)Length: 53.156 in (1.351 m)Width: 21.954 in (0.549 m)Height: 33.50 in (0.854 m)Dry weight: 376 lb (170.7 kg)Valvetrain: Underhead camshaftFuel system: Upright carburetorFuel type: 65 octane rating gasolineOil system: Full pressure typeCooling system: air-cooled (pressure type cylinder baffles)Power output: 175 hp at 2,450 rpmCompression ratio: 6:1 
