NTSB Identification: ATL83LA082.
The docket is stored on NTSB microfiche number 19707.
Accident occurred Wednesday, January 05, 1983 in HORSE CAVE, KY
Aircraft: CESSNA T210L, registration: N1741X
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 PILOT REPORTED THAT HE ENCOUNTERED TURBULENCE, AND AT ABOUT THE SAME TIME, THE ENGINE BEGAN RUNNING ROUGH. HE BEGAN TROUBLESHOOTING AND DISCOVERED THAT THE ROUGHNESS WAS DIRECTLY PROPORTIONAL TO THROTTLE MOVEMENT; WHEN THE THROTTLE WAS ADVANCED, THE ROUGHNESS INCREASED. HE BELIEVED THE PROPELLER CONTROL HAD NO EFFECT ON THE ROUGHNESS. HE REPORTED THAT THE ENGINE RPM BEGAN TO DROP REGARDLESS OF MANIFOLD PRESSURE. HE ELECTED TO LAND ON AN INTERSTATE HIGHWAY. DURING THE LANDING, THE AIRCRAFT STRUCK A MOTOR VEHICLE AND AN EMBANKMENT. AFTER LANDING, THE PROPELLER BLADES WERE FOUND IN THE FEATHERED POSITION. AN EXAMINATION OF THE PROPELLER SYSTEM REVEALED THE BLADE ACTUATING PIN ON ONE BLADE HAD SEPARATED FROM THE BLADE BUTT, AT A PRE-EXISTING CRACK. THE PROPELLER HAD BEEN OVERHAULED ON 1/6/78 AT 932.8 HRS. THE RECOMMEND OVERHAUL PERIOD WAS 1200 HRS OR 5 YRS, WHICHEVER WAS FIRST.

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

PROPELLER SYSTEM/ACCESSORIES,PITCH CHANGE MECH..FATIGUE


Contributing Factors

OBJECT..VEHICLE


Contributing Factors

TERRAIN CONDITION..DIRT BANK/RISING EMBANKMENT

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