PALMA, KY, USA
N4753W
ROCKWELL 114
THE PILOT REPORTED A COMPLETE ENGINE FAILURE WHILE DESCENDING TO TRAFFIC PATTERN ALTITUDE. THE ATTEMPTS TO RESTART THE ENGINE FAILED. THE PILOT CRASHED IN A FIELD. THE INVESTIGATION DISCLOSED AN INTERNAL MAGNETO TIMING OF 30 AND 27 DEGREES RESPECTIVELY. THE PRESCRIBED MAGNETO SETTING IS 25 DEGREES. THE BOTTOM SPARK PLUGS WERE WET WITH FUEL AFTER AN ENGINE RUN WAS COMPLETED. THE ENGINE WAS OVERHAULED ABOUT 165 HOURS PRIOR TO THIS ACCIDENT. ABOUT SIX MONTHS AFTER THE OVERHAUL, PLATINUM TIP SPARK PLUGS WERE INSTALLED TO CORRECT A MAGNETO RPM DROP PROBLEM. THE AIRPLANE COLLIDED WITH A ROUND BALE HAY HOLDER DURING THE LANDING ATTEMPT.
Source: NTSB Aviation Accident Database
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