On April 8, 2005, a Cessna 172P (registration N777UM) was involved in an aviation accident near Ann Arbor, MI. Investigators recorded the probable cause as: The failure of the carburetor nozzle resulting in loss of engine power and the unsuitable terrain encountered during the forced landing. A factor was the low altitude. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
An airplane was damaged during a forced landing following a loss of engine power while executing a go-around. Post-accident engine runs revealed roughness at 1,400 rpm, and the carburetor was found missing the accelerator pump nozzle tube.
Accident Sequence
The airplane experienced a loss of engine power while conducting a go-around maneuver. The subsequent forced landing resulted in damage to the aircraft.
Post-Accident Examination
Engine runs performed after the accident indicated that the engine would run rough when power was advanced to 1,400 rpm. However, the engine operated normally throughout its operational rpm range when equipped with a carburetor from another aircraft.
Carburetor Findings
Inspection of the accident carburetor revealed that the accelerator pump nozzle tube was missing. No other discrepancies were observed.
Conclusion
The investigation did not specify a probable cause.
What happened in the 8 Apr 2005 Cessna 172P accident near Ann Arbor, MI?
An airplane was damaged during a forced landing following a loss of engine power while executing a go-around. Post-accident engine runs revealed roughness at 1,400 rpm, and the carburetor was found missing the accelerator pump nozzle tube.
What aircraft was involved and where did it happen?
The accident on 8 Apr 2005 involved a Cessna 172P, registration N777UM, at Ann Arbor, MI.
What was the probable cause of the accident?
The failure of the carburetor nozzle resulting in loss of engine power and the unsuitable terrain encountered during the forced landing. A factor was the low altitude.
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