Service Bulletin No. 552
Supersedes and Replaces Service Bulletin No. 550
DATE: August 16, 2002
MODELS AFFECTED
Service Bulletin No. 552 applies only to TIO and LTIO-540 engines rated at 300 horsepower or higher.
Engines that previously complied with Service Bulletin No. 550 are also affected by Service Bulletin No. 552.
TIME OF COMPLIANCE
Before further flight.