Service Instruction No. 1037AA
Approved Pistons, Rings, Cylinders, and Gasket Set Application for Use on Lycoming Aircraft Engines
Publications
Service Instruction No. 1037AA
Date: July, 2025
SUBJECT:
Approved Pistons, Rings, Cylinders, and Gasket Set Application for Use on
Lycoming Aircraft Engines
MODELS AFFECTED:
All Lycoming opposed series aircraft engines in Table 1.
TIME OF COMPLIANCE:
When installing new rings, pistons, valves and cylinders.
