Service Instruction No. 1565 A

Replacement Thermostatic Oil Cooler Bypass Valves

Publications
DATE:

May 4, 2017

MODELS AFFECTED:

Lycoming engines using a thermostatic oil cooler bypass valve

TIME OF COMPLIANCE:

At overhaul or when necessary to replace the thermostatic oil cooler bypass valve

REASON FOR REVISION: 

Clarify replacement valve part numbers for specific Lycoming engine models

Get It Exchanged

Use our Engine Exchange Program to order a new, rebuilt, or overhauled engine to experience more airtime and less downtime.