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| NTSB Identification: FTW00LA036. The docket is stored in the (offline) NTSB Imaging System. |
| Accident occurred Saturday, November 20, 1999 at CARLISLE, AR |
| Aircraft: Cessna 152, registration: N413JF |
| Injuries: 2 Uninjured |
| Event: 20001212X20105 Status: Final Report Approved On Thursday, January 18, 2001 |
| NTSB Preliminary Narrative (6120.19A) |
| On November 20, 1999, at 1350 central standard time, a Cessna 152 airplane, N413JF, was substantially damaged during a forced landing |
| following a loss of engine power while maneuvering near Carlisle, Arkansas. The flight instructor and the commercial pilot receiving instruction |
| were not injured. The airplane was owned and operated by Central Flying Service, Inc., of Little Rock, Arkansas. Visual meteorological |
| conditions prevailed throughout the area for the Title 14 CFR Part 91 instructional flight for which a flight plan was not filed. The local flight |
| originated from the Little Rock Airport (LIT), at approximately 1245. |
| The flight instructor reported to the NTSB investigator-in-charge that the purpose of the flight was to provide flight instruction to an instrument |
| rated commercial helicopter pilot who was seeking to obtain an airplane single engine land private pilot certificate. The flight instructor added that |
| the pilot receiving instruction had accumulated a total of 3.3 hours in airplanes. The lesson plan for the day's flight included "upper air work, |
| simulated forced landings, and touch and go landings." |
| On the fourth simulated forced landing, while at 1,700 feet agl, the flight instructor simulated the loss of engine power by applying full carburetor |
| heat and retarding the throttle to idle. At 700 feet agl, the flight instructor directed the pilot receiving instruction to initiate a recovery. The engine |
| failed to respond when the pilot receiving instruction advanced the throttle from idle to full power. |
| The flight instructor stated that he immediately assumed control of the airplane and configured the airplane with full flaps to land into the wind in a |
| freshly plowed field. The flight instructor added that after touching down, the airplane rolled on its main landing gear for approximately 50 feet. |
| As the speed dissipated, the nose landing gear touched down and sank in the soft ground. Subsequently, the airplane nosed over and came to |
| rest in the inverted position. |
| Both occupants were wearing their shoulder harnesses during the mishap, and were able to exit the airplane unassisted. The flight instructor |
| reported that he observed the student take the appropriate fuel samples during preflight. He added that he had experienced a 200 rpm drop |
| during the magneto check portion of the engine run. The flight instructor stated that he instructed the student on the procedure for clearing a |
| fouled plug by leaning the mixture and increasing engine power. The drop in rpm was eventually cleared prior to the departure from Little Rock. |
| The flight instructor added that he also checked the operation of the carburetor heat during the engine run-up. |
| The FAA inspector, who responded to the accident site, reported that the nose wheel assembly collapsed aft, and the right wing tip, the top of |
| the vertical stabilizer and the rudder sustained structural damage. The engine mounts and propeller were damaged. |
| An engine run was scheduled on January 14, 2000, under the supervision of an FAA inspector. The airframe was secured and the propeller |
| replaced prior to attempting to run the engine. The engine failed to run. A detailed examination of the engine ignition system revealed |
| "excessively fouled spark plugs." |
| NTSB Final Narrative (6120.4) |
| During an instructional flight, the airplane's engine failed to respond when the pilot receiving instruction advanced the throttle from idle to full |
| power. The flight instructor had simulated a loss of engine power by applying full carburetor heat and retarding the throttle to idle, while at 1,700 |
| feet agl. At 700 feet agl, the flight instructor directed the pilot receiving instruction to initiate a recovery. The flight instructor assumed the |
| controls and configured the airplane with full flaps when the engine failed to respond. The airplane touched down in a freshly plowed field. |
| After touching down, the airplane rolled on its main landing gear for approximately 50 feet. As the speed dissipated, the nose landing gear |
| touched down and sank in the soft ground. Subsequently, the airplane nosed over and came to rest in the inverted position. An engine test run |
| was attempted under the supervision of an FAA inspector. The engine failed to start due to excessively fouled spark plugs. |
| NTSB Probable Cause Narrative |
| The loss of engine power as a result of excessively fouled spark plugs. A factor was the soft terrain during the forced landing. |
| Occurrences and Sequence of Events |
| Occurrence: 1, LOSS OF ENGINE POWER(TOTAL) - NONMECHANICAL |
| Phase of Operation: MANEUVERING |
| Sequence of Events for Occurrence Number: 1 |
| 1 ( Cause ) IGNITION SYSTEM, SPARK PLUG / FOULED / (0) |
| Occurrence: 2, FORCED LANDING |
| Phase of Operation: EMERGENCY DESCENT/LANDING |
| Occurrence: 3, NOSE OVER |
| Phase of Operation: EMERGENCY LANDING |
| Sequence of Events for Occurrence Number: 3 |
| 1 ( Factor ) TERRAIN CONDITIONS / SOFT / (0) |
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