NTSB Identification: FTW88LA081.
The docket is stored on NTSB microfiche number 38374.
Accident occurred Saturday, March 19, 1988 in WEATHERFORD, TX
Probable Cause Approval Date: 01/04/1990
Aircraft: CESSNA 150L, registration: N10842
Injuries: 2 Minor.

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

A FORCED LANDING WAS ATTEMPTED FOLLOWING A COMPLETE ENG FAILURE. THE PLT OVERSHOT THE INTENDED TOUCHDOWN PT AND PULLED THE ACFT OFF THE GRND IN AN ATTEMPT TO CLEAR A BUSY HWY. HOWEVER, THE ACFT STRUCK WIRES LOCATED NEXT TO THE ROAD. EVIDENCE INDICATED THAT THE ENG FAILURE WAS CAUSED BY THE FATIGUE FAILURE OF THE 4 BOLTS THAT ATTACHED THE CLUSTER GEAR TO THE CAMSHAFT. ONE OF THE BOLT HEADS WAS JAMMED BETWEEN THE CLUSTER GEAR AND THE CRANKSHAFT GEAR, WHICH SEIZED THE ENG. THE FATIGUE FAILURES APPEARED TO BE THE RESULT OF IMPROPER TORQUE APPLICATION DURING THE PREVIOUS INSTALLATION.

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

ACCESSORY DRIVE ASSY,DRIVE GEAR..UNDERTORQUED

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

MAINTENANCE,INSTALLATION..IMPROPER..OTHER MAINTENANCE PERSONNEL


Contributing Factors

OBJECT..WIRE,TRANSMISSION


Contributing Factors

ACCESSORY DRIVE ASSY,DRIVE GEAR..SEPARATION


Contributing Factors

ACCESSORY DRIVE ASSY,DRIVE GEAR..FATIGUE


Contributing Factors

PROPER TOUCHDOWN POINT..MISJUDGED..PILOT IN COMMAND

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