What was found
LEFT ENGINE WOULD NOT DEVELOP FULL POWER AT TAKEOFF. AIRCRAFT CRASH LANDED DUE TO POOR PERFORMANCE. INSPECTION OF ENGINE REVEALED THAT NR 2 CYLINDER HAD ''ZERO'' COMPRESSION. FURTHER INSPECTION REVEALED THE EXHAUST VALVE FACE WAS NOT SEALING ON HALF OR MORE OF THE SURFACE OF THE VALVE SEAT. LAST ANNUAL INSPECTION C/W 11-12-99. COMPRESSION CHECK ALL CYLINDERS NORMAL. ENGINE TIME SINCE MAJOR OVERHAUL, 934.7 HOURS. VALVE, EXHAUST P/N 646286. INSERT, EXHAUST VALVE SEAT, P/N 35967. (X)