NTSB Identification: FTW96LA122.
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Accident occurred Friday, February 16, 1996 in NEW ORLEANS, LA
Probable Cause Approval Date: 12/16/1996
Aircraft: Cessna 182P, registration: N9901M
Injuries: 2 Uninjured.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
The pilot made a gliding approach to land from 3,500 feet MSL with the power set at 1500 to 1700 RPM and the carburetor heat on. The pilot reported to the investigator-in-charge that while descending through the first 3,000 feet that he did not clear the engine. The pilot recounted that the RPM began 'falling off', and when he increased the throttle, the RPM did not rise. The pilot performed a forced landing, but due to 'dusky conditions and slight haze', the pilot did not see a levee wall which the right wing impacted while in the landing flare. There was a temperature inversion at the time of the accident, with ground level humidity of 22% and a humidity of 49% at 5,000 feet. The FAA Flight Training Handbook states in the section under 'Descents (Maximum Distance Glides)' that during 'power-off descents, the engine should be cleared periodically to prevent excessive cooling and fouling.' The engine was test run on the airframe. According to the manufacturer, who performed the test run, the engine 'startup was immediate, and the engine ran smoothly.'
The National Transportation Safety Board determines the probable cause(s) of this accident to be: The pilot not following procedures and directives in that he did not periodically clear the engine during an extended glide. The factors were carburetor icing weather conditions and lack of suitable terrain for landing. Full narrative available
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