BERMUDA DUNES, CA, USA
N7115L
GRUMMAN AA-5
IMMEDIATELY AFTER TAKEOFF THE ENG LOST POWER & THE ACFT WAS UNABLE TO MAINTAIN LEVEL FLT. THE ACFT LANDED IN SAND DUNES AND FLIPPED OVER. DURING A SUBSEQUENT ENG RUN IT WAS NOTED THAT THE ENG RAN NORMALLY AT LOW POWER SETTINGS BUT AT TAKEOFF POWER SETTINGS IT DEVELOPED AN APPARENT IGNITION PROBLEM IN THAT THE ENG MISFIRED & SURGED. INSPECTION REVEALED THAT THE RIGHT MAGNETO WAS NOT DEVELOPING SUFFICIENT VOLTAGE OUTPUT. THE RECOMMENDED SERVICE LIFE OF THE MAGNETO IS 900 HOURS & IT APPEARED THIS MAGNETO WAS IN SERVICE FOR 1897 HOURS.
Source: NTSB Aviation Accident Database
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