BELLEVILLE, IL, USA
N9545X
CESSNA 210B
THE PILOT STATED THAT AS THE AIRPLANE BEGAN TO CLIMB OUT THERE WAS A LOSS OF ENGINE RPM AND THE ENGINE STARTED TO RUN ROUGH. A POST-ACCIDENT ENGINE RUN-UP WAS CONDUCTED. THE ENGINE STARTED EASILY AND OPERATED NORMALLY AT LOW POWER SETTINGS. AFTER A WARM UP PERIOD THE THROTTLE WAS ADVANCED TO 2500 RPM, AND 'THE ENGINE THEN STARTED TO RUN ROUGH, WITH BLACK SMOKE AND FLAMES COMING OUT THE EXHAUST... .' A FUEL PUMP BENCH TEST REVEALED THE HIGH END DISCHARGE ADJUSTMENT WAS SET HIGHER THAN RECOMMENDED. THE TEST STAND DISCHARGE GAGE PEGGED ON THE HIGH SIDE WHEN THE RPM WAS ADVANCED TO 2600 RPM PER TEST PARAMETERS. THE AIRCRAFT HAD FLOWN 1.1 HOURS SINCE THE ANNUAL INSPECTION WAS COMPLETED 8 MONTHS BEFORE THE ACCIDENT. LOGBOOKS INDICATED THE ENTIRE FUEL SYSTEM WAS REMOVED, OVERHAULED, REINSTALLED AND ADJUSTED IN DECEMBER, 1990, APPROXIMATELY 4 FLIGHT HOURS BEFORE THE ACCIDENT.
THE IMPROPER FUEL PUMP HIGH END DISCHARGE ADJUSTMENT. A RELATED FACTOR IS IMPROPER MAINTENANCE/ANNUAL INSPECTION.
Source: NTSB Aviation Accident Database
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