RUTHERON, NM, USA
N8198B
CESSNA 172
THE ACFT COLLIDED WITH THE GROUND INADVERTANTLY AFTER DROPPING EMERGENCY DRILLING EQUIPMENT AT A DRILLING SITE. THE PLT WAS MAKING ANOTHER PASS TO CHECK ON THE DROP WHEN THE ACFT STARTED TO DESCEND. IN SPITE OF POWER APPLICATION THE ACFT DESCENDED INTO AN AREA OF TREES AND POLES. THE ENGINE WAS STILL RUNNING AFTER IMPACT AND WAS SECURED BY THE PLT. THE SITE ALTITUDE WAS 7500 FT. POST ACCIDENT INVESTIGATION REVEALED BLACK AND GRAY SOOT ON THE SPARK PLUGS WHICH IS 'INDICATIVE OF A RICH MIXTURE.' THE PLT HAD APPROACHED AT 70 KTS IAS WITH 10-20 DEGREES OF FLAPS.
Source: NTSB Aviation Accident Database
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