What was found
PRELIMINARY INSPECTION FINDINGS: IN FLIGHT, LT ENGINE FAILURE ON CLIMB OUT. LT ENGINE HAD 737.1 HOURS AND PUT IN SERVICE 05/2003. LARGE HOLE IN CASE AROUND NR 5 AND 6 CYLINDER. NR 5 ROD SEPARATED FROM CRANK AND BROKEN IN TWO PIECES A FEW INCHES FROM PISTON PIN. SUBSEQUENT FINDINGS FROM ENGINE TEARDOWN REPORT PERFORMED BY MFG. THE SIGNATURES PRESENT ON THE NR 5 CYLINDER BORE AND THE DAMAGE TO THE NR 5 CONNECTING ROD ARE CONSISTENT WITH A HYDROSTATIC LOCK EVENT. PRELIMINARY INFORMATION WAS BASED ON A SB CE-00-07, AND SDR REPORTS ISSUED BETWEEN 1995 AND PRESENT, ON SAME MODEL ENGINE WITH SIMILAR BOLT FAILURES. (K)