What was found
DURING ROUTINE 100-HOUR INSPECTION, EXHAUST LEAK NOTED FROM CYLINDER NR 3. AFTER REMOVAL OF EXHAUST RISER, A CRACK AND SEPARATION ON THE FLANGE WAS DISCOVERED. RISER REMOVED FOR REPAIR. SUSPECT CAUSE MISALIGNED EXHAUST, AGE, FATIGUE. RECOMMENDATION: INSPECT WITH 10X GLASS AND VISUAL EVERY 50 HOURS.