NTSB Identification: ATL82IA042
14 CFR Part 91: General Aviation
Incident occurred Friday, January 29, 1982 in ATLANTA, GA
Probable Cause Approval Date: 01/29/1983
Aircraft: BEECH B200, registration: N1851S
Injuries: 2 Uninjured.

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

WHILE AT CRUISE WITH RECOMMENDED POWER SETTINGS, THE LEFT ENGINE OIL PRESSURE AND TORQUE INDICATIONS BEGAN FLUCTUATING AND DROPPING. AS THE POWER LEVER WAS RETARDED A POPPING SOUND WAS HEARD AND THE ENGINE WAS SHUT DOWN. A PRECAUTIONARY LANDING WAS MADE IN ATLANTA. ENGINE DISASSEMBLY DISCLOSED A FAILURE OF THE NO. 1 BEARING. BLADE TIP FEATHERING WAS NOTED ON THE FIRST AND SECOND STAGE COMPRESSOR BLADE TIPS, AS WELL AS ON THE IMPELLER STAGE. THE OIL NOZZLE WAS UNOBSTRUCTED. PRATT AND WHITNEY HAD OBTAINED A NEW VENDOR FOR THE BEARING, WHICH HAD 113 HOURS IN SERVICE AT THE TIME OF THE FAILURE.

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

ENGINE ASSEMBLY,BEARING..FAILURE,TOTAL


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