What was found
PISTON PIN PLUG, PN 60828, IS NOT CORRECT, BUT LOCATION IS CORRECT. ENGINE OVERHAULED 24.8 HRS AGO. COMPLAINT OF LOSS OF POWER. GROUND RUN SEEMED OK, NOTHING OBVIOUS. COMPRESSION TEST FOUND LOW COMPRESSION ON ONE CYLINDER. BORESCOPED AND COULD SEE METAL FLAKES. UPON DISASSEMBLY OF CYLINDER, FOUND SMALL ALUMINUM BALL IN CHEWED UP PISTON. AREA FROM NR 2 RING DOWN TO TOP OF PISTON PIN, HOLE WORN AWAY. SECTION OF BOTTOM RING BROKE OFF. CYLINDER WALL IN THIS AREA DAMAGED.