Supplement No. 1 to Service Bulletin No. 552

Crankshaft Replacement in Lycoming TIO and LTIO-540 Engines Rated at 300 Horsepower and Higher


DATE: September 5, 2002

Lycoming Service Bulletin No. 552 requires replacement of crankshafts in some turbocharged Lycoming TIO and LTIO-540 engines rated at 300 horsepower or higher.

Get It Exchanged

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