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| NTSB Identification: CHI93LA049. The docket is stored on NTSB microfiche number 47533. |
| Accident occurred Sunday, December 06, 1992 at OSHTEMO, MI |
| Aircraft: CESSNA 150F, registration: N7058F |
| Injuries: 2 Uninjured |
| Event: 20001211X16138 Status: Final Report Approved On Friday, June 11, 1993 |
| NTSB Final Narrative (6120.4) |
| WHILE EN ROUTE BACK TO THE AIRSTRIP AFTER A LOCAL FLIGHT A LOSS OF ENGINE POWER WAS EXPERIENCED. THE PILOT STATED HE APPLIED CARBURETOR HEAT AND ENGINE POWER WAS REGAINED. AFTER REMOVING CARBURETOR HEAT, THE ENGINE RPM AGAIN DECREASED. AFTER THIS OCCURRED TWO MORE TIMES, THE PILOT CHOSE A FIELD IN WHICH TO MAKE AN EMERGENCY LANDING. THE TERRAIN WAS ROUGH AND DURING THE LANDING ROLL, THE RIGHT WING CONTACTED THE GROUND, AND THE NOSE GEAR COLLAPSED. ICING PROBABILITY CHARTS INDICATE THAT THE EXISTING TEMPERATURE/DEWPOINT OF 25 DEGREES AND 16 DEGREES RESPECTIVELY WAS CONDUCIVE TO THE FORMATION OF LIGHT CARBURETOR ICING AT GLIDE AND CRUISE POWER SETTINGS. |
| NTSB Probable Cause Narrative |
| IMPROPER USE OF CARBURETOR HEAT BY THE PILOT-IN-COMMAND. |
| Occurrences and Sequence of Events |
| Occurrence: 1, LOSS OF ENGINE POWER(PARTIAL) - NONMECHANICAL |
| Phase of Operation: CRUISE - NORMAL |
| Sequence of Events for Occurrence Number: 1 |
| 1 (Finding) FUEL SYSTEM, CARBURETOR / ICE / (0) |
| 2 ( Cause ) CARBURETOR HEAT / IMPROPER USE OF / PILOT IN COMMAND |
| Occurrence: 2, FORCED LANDING |
| Phase of Operation: DESCENT - EMERGENCY |
| Occurrence: 3, DRAGGED WING, ROTOR, POD, FLOAT OR TAIL/SKID |
| Phase of Operation: LANDING - ROLL |
| Sequence of Events for Occurrence Number: 3 |
| 1 ( Factor ) TERRAIN CONDITIONS / ROUGH/UNEVEN / (0) |
| Occurrence: 4, NOSE GEAR COLLAPSED |
| Phase of Operation: LANDING - ROLL |
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