VERNON, AL, USA
N7939U
CESSNA 172F
IMPROPER MAINTENANCE OF THE SPARK PLUGS BY THE PILOT/MECHANIC WHICH RESULTED IN A PARTIAL LOSS OF ENGINE POWER, AND THE PILOT'S FAILURE TO CLEAR TREES DURING AN EMERGENCY LANDING IN AN OPEN FIELD RESULTING IN AN INADVERTENT STALL.
Source: NTSB Aviation Accident Database
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