AMARILLO, TX, USA
N3956U
CESSNA 150E
DURING DEPARTURE FROM AN UNIMPROVED 1,800-FT GRASS AIRSTRIP, IN A HIGH GROSS WEIGHT AIRPLANE, THE LEFT WING CONTACTED THE GROUND AND THE AIRPLANE CARTWHEELED. THE PILOT WAS MAKING A LEFT TURN TO AVOID ELECTRICAL TRANSMISSION LINES AT THE DEPARTURE END. THE AIRPLANE HAD JUST COMPLETED AN ANNUAL INSPECTION. BOTH MAGNETOS HAD BEEN INCORRECTLY SET TO 16 DEG BEFORE TOP DEAD CENTER. ACCORDING TO THE ENGINE MANUFACTURER THIS SETTING WOULD RESULT IN A POWER LOSS OF APRX 30%.
AN UNDERPOWERED TAKEOFF ATTEMPT DUE TO INCORRECTLY SET MAGNETOS. CONTRIBUTING WAS THE TRANSMISSION LINES.
Source: NTSB Aviation Accident Database
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