Service Bulletin No. 651

Inspection for Rotator Caps on Intake Valves

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Service Bulletin No. 651
Inspection for Rotator Caps on Intake Valves

September 29, 2022

MODELS AFFECTED

O-540-F1B5 and O-360-J2A engines with serial number identified in Table 1

TIME OF COMPLIANCE

Engines with less than 300 hours, inspect at next scheduled maintenance event not to exceed 50 hours of operation. Engines with 300 hours or more must be inspected within next 10 hours of operation.

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