Lycoming O-235
FOUR-CYLINDER HORIZONTALLY-OPPOSED PISTON AIRCRAFT ENGINE FAMILY
Avco Lycoming O-235; Lycoming O-235-C1; Avco Lycoming O-235-a; Avco Lycoming O-235-A; Textron Lycoming O-235; Lycoming O-235C; Lycoming O-235-C; Lycoming O-235 L2C; Lycoming O-235-L2C; Lycoming O-235-C2A; Textron Lycoming O-235-C2A
The Lycoming O-235 is a family of four-cylinder, air-cooled, horizontally opposed piston aircraft engines that produce , derived from the earlier O-233 engine.Textron Lycoming: Operator's Manual, Textron Lycoming Aircraft Engines, Series O-235 & O-290, 4th Edition January 1988, Pages 2-1 & 2-4, Stock # 60297-9, Textron Lycoming.