NTSB Identification: FTW83FA043
14 CFR Part 91: General Aviation
Accident occurred Monday, November 22, 1982 in BUCCANEER OIL F
Probable Cause Approval Date: 11/22/1983
Aircraft: BELL 206B, registration: N144AL
Injuries: 1 Fatal.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

THE ACFT WAS FOUND FLOATING INVERTED ABOUT 1.5 MI FROM THE POINT OF DEPARTURE. THE TAILBOOM HAD SEPARATED & THERE WAS EVIDENCE THAT THE M/R BLADES HAD STRUCK THE TAILBOOM. THE WINDSHIELD & CHIN BUBBLE WAS BROKEN OUT. AN OIL PUMP GEAR TOOTH WAS FOUND ADHERING TO THE LOWER CHIP DETECTOR PLUG. THE OIL PUMP HAD 3 TEETH MISSING FROM A GEAR. THERE WAS EVIDENCE OF A SMOOTH ROUND OBJECT GOING THROUGH THE PUMP & JAMMING THE GEAR TEETH. THE BALL SEPARATOR GAGE FOR A BEARING (MRC P/N 6859435-G) HAD BROKEN APART ALLOWING BALLS TO FALL OUT. THE GEAR WHICH DRIVES THE FUEL CONTROL & OIL PUMP THEN MOVED SIDEWAYS FAR ENOUGH TO BECOME UNCOUPLED FROM ITS DRIVE GEAR. THE SEVEN TANGS ON ONE-HALF OF THE BALL SEPARATOR CAGE HAD SEPARATED. THE SEPARATED BEARING WAS NOT AN AUTHORIZED TYPE FOR USE IN THIS ENGINE. THE ENGINE MANUFACTURER ISSUED A COMMERCIAL ENGINE BULLETIN DATED 9/30/82 CALLING FOR ALL UNAUTHORIZED BEARINGS TO BE REMOVED FROM SPARE STOCK & SCRAPPED.

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

REDUCTION GEAR ASSY,ACCESSORY DRIVE BEARING..INCORRECT

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

REDUCTION GEAR ASSY,ACCESSORY DRIVE BEARING..FATIGUE

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

REDUCTION GEAR ASSY,ACCESSORY DRIVE BEARING..FAILURE,TOTAL

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

REDUCTION GEAR ASSY,ACCESSORY DRIVE BEARING..DISABLED

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

ADEQUATE ROTOR RPM..NOT MAINTAINED..PILOT IN COMMAND

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