NTSB Identification: FTW89LA044.
The docket is stored on NTSB microfiche number 39353.
Accident occurred Tuesday, January 31, 1989 in ORE CITY, TX
Probable Cause Approval Date: 09/05/1990
Aircraft: CESSNA 152, registration: N4745B
Injuries: 1 Minor,1 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE PLT WAS ON A X-COUNTRY FLT AT NIGHT WHEN THE ENG FAILED. HE MADE AN EMERGENCY (MAYDAY) TRANSMISSION & LOOKED FOR A PLACE TO LAND. BY LOOKING FOR LIGHTS, HE LOCATED A ROAD FOR A FORCED LANDING. DRG THE LANDING ROLL-OUT, THE ACFT BOUNCED, ANGLED TO THE LEFT & ENCOUNTERED A DRAINAGE DITCH & CULVERTS. SUBSEQUENTLY, THE ACFT NOSED OVER. A TEARDOWN OF THE ENG REVEALED THE CENTER CRANKSHAFT BEARING HAD ROTATED IN ITS SEAT SUFFICIENTLY TO BLOCK THE OIL PASSAGE FROM THIS BEARING TO THE #3 CONNECTING ROD BEARING. EVENTUALLY, THE #3 CONNECTING ROD FAILED & FRACTURED THE ENG CASE. THE AFT MAIN BEARING HAD ALSO TURNED SLIGHTLY IN ITS SEAT, BUT TO A LESSER DEGREE. THE ENG HAD ACCUMULATED 2263 HRS OF OPN SINCE IT WAS LAST OVERHAULED ON 8/31/84. THE MANUFACTURER RECOMMENDED IT BE OVERHAULED AT 2000 HR INTERVALS.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

SLIPPAGE OF THE CENTER CRANKSHAFT BEARING, WHICH RESULTED IN OIL STARVATION AND SUBSEQUENT FAILURE OF THE #3 CONNECTING ROD. CONTRIBUTING FACTORS WERE: THE AIRCRAFT OWNER'S CONTINUED OPERATION OF THE ENGINE BEYOND THE MANUFACTURER'S RECOMMENDED OVERHAUL PERIOD, THE DARK NIGHT, THE PILOT'S FAILURE TO MAINTAIN ROADWAY ALIGNMENT DURING THE LANDING, AND THE DITCH/CULVERTS.

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