Service Instruction No. 1526 G

New Piston Part Numbers

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Supersedes Service Instruction No. 1526F

July 24, 2015


All Lycoming reciprocating aircraft engines


As required for replacement


Added new piston part number

This Service Instruction identifies additional new piston part numbers that superseded existing piston part numbers in the table below. All of the new pistons have been manufactured to be equivalent to the superseded piston part numbers shown in the table below. Each new superseding piston is interchangeable with its equivalent old superseded piston. The old superseded pistons and the new superseding pistons can be mixed in the same engine in any location.

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