Service Bulletin No. 651
Inspection for Rotator Caps on Intake Valves
September 29, 2022
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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