The Lycoming O-540 is a family of air-cooled six-cylinder, horizontally opposed fixed-wing aircraft and helicopter engines of 541.5 cubic inches (8,874 cc) displacement, manufactured by Lycoming Engines. The engine is a six-cylinder version of the four-cylinder Lycoming O-360.
Lycoming O-540
Lycoming TEO-540
An LTIO-540 mounted on the right wing of a Piper Chieftain: The turbocharger can be seen in the upper right of the image.
Lycoming Engines is a major American manufacturer of aircraft engines. With a factory in Williamsport, Pennsylvania, Lycoming produces a line of horizontally opposed, air-cooled, four, six and eight-cylinder engines including the only FAA-certified aerobatic and helicopter piston engines on the market.
Lycoming water tower in Williamsport, Pennsylvania
Demorest Manufacturing Company Machine
A Demorest print advertisement
O-145-B2