DATE: September 29, 2010
All Lycoming piston engines.
TIME OF COMPLIANCE
As required by the subject bulletin.
This Service Bulletin contains information about required corrective action to take in response to engine overboost on Lycoming supercharged and turbocharged engines. This information was in Service Bulletin No. 369J. With the revision, Service Bulletin No. 369K, this overboost information has now been moved to this Service Bulletin as a stand alone document for clarity.
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