Supersedes Service Instruction No. 1526F
July 24, 2015
All Lycoming reciprocating aircraft engines
TIME OF COMPLIANCE
As required for replacement
REASON FOR REVISION
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This Service Instruction identifies additional new piston part numbers that superseded existing piston part numbers in the table below. All of the new pistons have been manufactured to be equivalent to the superseded piston part numbers shown in the table below. Each new superseding piston is interchangeable with its equivalent old superseded piston. The old superseded pistons and the new superseding pistons can be mixed in the same engine in any location.
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