Service Bulletin No. 627 E

EXHAUST SYSTEM INSPECTION
DATE:

May 17, 2018

SUBJECT:

Exhaust System Inspection

MODELS AFFECTED:

Lycoming Engine Model TIO-540-AJ1A

TIME OF COMPLIANCE:

If the Exhaust System is not replaced per this revision, after the initial Exhaust System Inspection, continue with subsequent repetitive Exhaust System Inspections per Table 2 in this Service Bulletin

Service Letter No. 253 C

Warranty Repair of AVStar Fuel Systems, Inc. Fuel Control Products
Date:

April 16, 2018

TO:

All Owners and Operators of Lycoming Piston Aircraft Engines

SUBJECT:

Warranty Repair of AVStar Fuel Systems, Inc. Fuel Control Products

REASON FOR REVISION:

Update AVStar warranty information sheet, and contact information.

Service Bulletin No. 553

DATE: September 16, 2002

MODELS AFFECTED

Those Lycoming TIO and LTIO-540 engines listed in Table 1 below.

Any field overhauled Lycoming TIO and LTIO-540 engine rated at 300 horsepower or higher that has a crankshaft installed with a serial number listed in Table 2.

Any Lycoming IO-540 engine that has an aftermarket turbocharger installed under an STC and has a crankshaft serial number listed in Table 2.

TIME OF COMPLIANCE

Within next 50 hours of operation or six months, whichever occurs first.

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