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| NTSB Identification: FTW98LA204. The docket is stored in the (offline) NTSB Imaging System. |
| Accident occurred Tuesday, June 02, 1998 at MENTONE, TX |
| Aircraft: Cessna 150, registration: N6486T |
| Injuries: 1 Uninjured |
| Event: 20001211X10299 Status: Final Report Approved On Tuesday, December 08, 1998 |
| NTSB Preliminary Narrative (6120.19A) |
| On June 2, 1998, at 1250 central daylight time, a Cessna 150 airplane, N6486T, was substantially damaged during a forced landing following a |
| partial loss of engine power near Mentone, Texas. The student pilot, sole occupant of the airplane, was not injured. The airplane was owned |
| and operated by the student pilot under Title 14 CFR Part 91. Visual meteorological conditions prevailed for the local instructional flight for which |
| a flight plan was not filed. The flight originated from the Lukins Flying Service airstrip near Pecos, Texas, at approximately 1230. |
| The student pilot reported to the FAA inspector that the itinerary for his solo cross country flight included stops at Mentone and Wink, and a |
| return flight to Pecos. While in cruise flight, the engine began to run rough and the engine RPM dropped to somewhere around 1,200 to 1,500 |
| RPM. After completing his emergency procedures, the pilot elected to execute a precautionary landing on the service road to an operating oil |
| pump, located approximately 2 miles away. |
| During the precautionary landing on the narrow domed road, with the flaps fully extended, the pilot lost control of the airplane. The pilot added |
| that the right main landing gear tire dug into the sand. The right main landing gear collapsed rearward after striking a large rock. Subsequently, |
| the right wing impacted the ground. |
| Examination of the airplane by the FAA inspector confirmed that the right wing, the fuselage, and the landing gear attaching point for the right |
| main gear, sustained structural damage. The reason for the reported rough running engine could not be determined; however, the pilot |
| suspected vapor lock. The engine could not be started at the accident site due to a dead battery. |
| According to maintenance records provided by the FAA inspector, the 1960 model airplane had been modified on June 15, 1996, when a 150 |
| horsepower Lycoming O-320-E3D engine was installed to replace the stock 100 horsepower Continental engine. The modification, performed |
| under STC SA4795SW, also featured a larger propeller and the addition of an STOL kit. |
| According to FAA medical records, the student pilot had accumulated a total of 85 hours at the time of his last medical examination on February |
| 11, 1997. His total time at the time of the accident was 107 hours. |
| NTSB Final Narrative (6120.4) |
| The student pilot reported that the itinerary for his solo cross-country flight included stops at Mentone and Wink, and a return flight to Pecos. |
| While in cruise flight, the engine began to run rough and the engine RPM dropped to somewhere around 1,200 to 1,500 RPM. After completing his |
| emergency procedures, the pilot elected to execute a precautionary landing on the service road to an operating oil pump. During the |
| precautionary landing on the narrow domed road, with the flaps fully extended, the pilot lost control of the airplane. The pilot added that the right |
| main landing gear tire dug into the sand. The right main landing gear collapsed rearward after striking a large rock. Subsequently, the right wing |
| impacted the ground. The reason for the reported rough running engine was not determined. |
| NTSB Probable Cause Narrative |
| a partial loss of engine power for undetermined reasons, and the pilot's failure to maintain directional control during landing. |
| Occurrences and Sequence of Events |
| Occurrence: 1, LOSS OF ENGINE POWER |
| Phase of Operation: CRUISE |
| Sequence of Events for Occurrence Number: 1 |
| 1 ( Cause ) REASON FOR OCCURRENCE UNDETERMINED / / |
| Occurrence: 2, LOSS OF CONTROL - ON GROUND/WATER |
| Phase of Operation: LANDING - ROLL |
| Sequence of Events for Occurrence Number: 2 |
| 1 (Finding) PRECAUTIONARY LANDING / PERFORMED / PILOT IN COMMAND |
| 2 ( Cause ) DIRECTIONAL CONTROL / NOT MAINTAINED / PILOT IN COMMAND |
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