HARRISON, AR, USA
N4031R
PIPER PA-32-300
THE ROUTINE BUSINESS FLT HAD PROGRESSED NORMALLY UNTIL APPROACHING BENTONVILLE, ARKANSAS. THE PIC RPTD HIS ENG RAN ROUGH FOR A VERY BRIEF PERIOD AND QUIT. EMERG PROCEDURES WERE CONDUCTED BUT A RESTART WAS IMPOSSIBLE. ONLY 1.5 HRS OF FLT HAD TRANSPIRED SINCE THE LAST REFUEL. AN INSP OF THE ACFT REVEALED THAT THE LEFT MAGNETO DRIVE BEARING HAD SIEZED AND THE DRIVE GEAR HAD SHEARED TOTALLY DISABLING THE MAG. THE OTHER MAG HAD FAILED TO FUNCTION PROPERLY. SUBSEQUENT TESTING OF THE OTHER MAG SHOWED INTERMITTENT OPERATION AND ARCING OF THE POINTS. THE ACFT WAS INSP 6 MOS PRIOR TO THE ACCIDENT.
Source: NTSB Aviation Accident Database
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