NTSB Identification: FTW83LA019
14 CFR Part 91: General Aviation
Accident occurred Saturday, October 23, 1982 in PIEDMONT, OK
Probable Cause Approval Date: 10/23/1983
Aircraft: NORTH AMERICAN F-51D, registration: N11T
Injuries: 2 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 ENG FAILED AT 5,500 FT MSL. DURING AN EMERGENCY LANDING AT A 5,000 FT DIRT STRIP (UNDER CONSTRUCTION FOR PAVING), GEAR EXTENSION WAS DELAYED TO INCREASE GLIDE. THE RIGHT GEAR DID NOT HAVE TIME TO LOCK DOWN & RETRACTED DURING LANDING. INITIAL EXAM OF THE ENG REVEALED THAT THERE WAS NO VALVE ACTION IN THE CYLINDERS WHEN THE ENG WAS ROTATED ALTHOUGH BOTH MAGNETOS OPERATED NORMALLY. DISASSEMBLY CONFIRMED THAT THE GEAR SHAFT, P/N 620078, WHICH OPERATES THE TWO ENG CAMSHAFTS HAD SHEARED.

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

ACCESSORY DRIVE ASSY,DRIVE SHAFT..FAILURE,TOTAL

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