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3 Miles Sw Of D, CO
THE AIRCRAFT WAS CRUISING AT 11000 FT WHEN THE ENGINE BEGAN TO RUN ROUGH. ATTEMPTS TO ENRICH AND THEN LEAN THE MIXTURE, THROTTLE ADJUSTMENTS AND SWITCHING THE FUEL TANKS DID NOT ALLEVIATE THE ENGINE ROUGHNESS. THE ENGINE THEN LOST ALL POWER. ANOTHER PLT STATED HE EXPERIENCED AN ENGINE FAILURE IN THE SAME AIRCRAFT SEVERAL WEEKS PRIOR TO THIS OCCURRENCE. NO EVIDENCE OF MECHANICAL FAILURE/MALFUNCTION WAS FOUND.
THE AIRCRAFT WAS CRUISING AT 11000 FT WHEN THE ENGINE BEGAN TO RUN ROUGH. ATTEMPTS TO ENRICH AND THEN LEAN THE MIXTURE, THROTTLE ADJUSTMENTS AND SWITCHING THE FUEL TANKS DID NOT ALLEVIATE THE ENGINE ROUGHNESS. THE ENGINE THEN LOST ALL POWER. ANOTHER PLT STATED HE EXPERIENCED AN ENGINE FAILURE IN THE SAME AIRCRAFT SEVERAL WEEKS PRIOR TO THIS OCCURRENCE. NO EVIDENCE OF MECHANICAL FAILURE/MALFUNCTION WAS FOUND.