Lycoming Service Bulletin 627
LYCOMING TIO540-AJ1A5 ENGINE EXHAUST INSPECTION
ENGINES UNDER 1000 OPERATING HOURS: WITHIN THE NEXT 10 HOURS AND EVERY 25 HOURS THEREAFTER
ENGINES OVER 1000 OPERATING HOURS: WITHIN THE NEXT 10 HOURS AND EVERY 50 HOURS THEREAFTER
INSPECT ENTIRE EXHAUST SYSTEM FOR LEAKS AND CRACKS, REPORT RESULTS DIRECT TO LYCOMING AFTER EACH INSPECTION
THIS INSPECTION IS IN ADDITION TO LYCOMING SB614A AND AD 2015-10-06