In 1928, Fairchild Aircraft introduced the 6-370, a six-cylinder, in-line, air-cooled engine. Through the 1930s, this engine used larger cylinders to increase displacement through 390, 410 and finally 441 cubic inches.
These engines acquired the name Ranger in 1930 and the Ranger Engine Division was formed in 1936.

At the end of World War II, the U.S. government disposed of their surplus Ranger engines at such low prices that Ranger was put out of business.

Ranger L-440

The Model 6-440 was the last and largest of four 6-cylinder engines produced by the Ranger Engine Division of Fairchild Aircraft. Designated by the U.S. military as the L-440, this engine was used almost exclusively by Fairchild aircraft.
Produced by the Ranger Engine Division of Fairchild Aircraft, L-440 was first used by the U.S. Army in 1940.

Over 6,500 L-440s were built.


  • L-440-1: 175 hp (130 kW)


  • inverted, 6-cylinder, In-line, air cooled, piston engine
    Displacement: 441 cubic inches (7.2 liters)

used by

  • Fairchild PT-19 Cornell