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| NTSB Identification: FTW90LA050. The docket is stored on NTSB microfiche number 41016. |
| Accident occurred Saturday, January 06, 1990 at GLENCOE, OK |
| Aircraft: CESSNA 152, registration: N5414P |
| Injuries: 1 Uninjured |
| Event: 20001212X22419 Status: Final Report Approved On Friday, September 04, 1992 |
| NTSB Final Narrative (6120.4) |
| DURING A SOLO SESSION, A STUDENT PILOT ATTEMPTED TO DO A PRACTICE FORCED LANDING. WEATHER CONDITIONS WERE VMC; HOWEVER, THE TEMPERATURE WAS 45 DEGREES FAHRENHEIT AND THE DEW POINT WAS 28 DEGREES FAHRENHEIT. THE PILOT ATTEMPTED RECOVERY BY ADVANCING THE THROTTLE AND APPLYING CARBURETOR HEAT SIMULTANEOUSLY. BECAUSE OF THE LATE APPLICATION OF CARBURETOR HEAT, ICING FORMED AND THE RECOVERY FROM THE PRACTICE FORCED LANDING COULD NOT BE ACCOMPLISHED. A FORCED LANDING WAS ATTEMPTED TO A ROAD; HOWEVER, VEHICULAR TRAFFIC FORCED THE PILOT TO CHANGE LANDING SITES. THE AIRPLANE CONTACTED TREES AND DESCENDED OUT OF CONTROL TO GROUND IMPACT. CONDITIONS WERE CONSISTENT WITH SERIOUS ICING POTENTIAL AT A GLIDE POWER SETTING. |
| NTSB Probable Cause Narrative |
| THE POWER LOSS DUE TO CARBURETOR ICE, WHICH RESULTED FROM THE PILOT'S FAILURE TO ENGAGE CARBURETOR HEAT IN A TIMELY |
| MANNER. A FACTOR IN THIS ACCIDENT WAS THE PILOT'S LACK OF TOTAL EXPERIENCE. |
| Occurrences and Sequence of Events |
| Occurrence: 1, LOSS OF ENGINE POWER(PARTIAL) - NONMECHANICAL |
| Phase of Operation: MANEUVERING |
| Sequence of Events for Occurrence Number: 1 |
| 1 ( Cause ) WEATHER CONDITION / CARBURETOR ICING CONDITIONS / (0) |
| 2 ( Cause ) CARBURETOR HEAT / DELAYED / PILOT IN COMMAND |
| 3 ( Factor ) LACK OF TOTAL EXPERIENCE / (0) / PILOT IN COMMAND |
| Occurrence: 2, FORCED LANDING |
| Phase of Operation: DESCENT - EMERGENCY |
| Occurrence: 3, IN FLIGHT COLLISION WITH OBJECT |
| Phase of Operation: DESCENT - EMERGENCY |
| Sequence of Events for Occurrence Number: 3 |
| 1 (Finding) OBJECT / TREE(S) / (0) |
| Occurrence: 4, IN FLIGHT COLLISION WITH TERRAIN/WATER |
| Phase of Operation: DESCENT - UNCONTROLLED |
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