Aviation Accident Summaries

Aviation Accident Summary ANC95LA001

ANCHORAGE, AK, USA

Aircraft #1

N38532

PIPER J5C

Analysis

THE PILOT STATED THAT 2 MINUTES AFTER TAKEOFF HE REDUCED POWER TO 2400 RPM. THE ENGINE DECELERATED TO 1000 RPM BY ITSELF AND THEN STOPPED PRODUCING POWER COMPLETELY. HE SELECTED A ROAD FOR A FORCED LANDING BUT DURING THE APPROACH A VEHICLE PULLED OUT ONTO THE ROAD. DURING THE PULL UP TO AVOID THE VEHICLE THE AIRCRAFT HIT POWERLINES. EXAMINATION OF THE ENGINE DID NOT REVEAL ANY MECHANICAL IRREGULARITIES. THE POSITION OF THE FUEL VALVE WAS UNDETERMINABLE BECAUSE THE FIRE DEPARTMENT HAD PLACED THE FUEL SELECTOR IN THE OFF POSITION.

Factual Information

On October 3, 1994 at 1630 Alaska daylight time, a wheel equipped Piper PA-18 airplane, N38532, registered to and operated by the pilot, experienced a loss of power after takeoff and was forced to land in a field near Merrill Field, Anchorage, Alaska. The personal flight was departing Merrill Field for a local flight and no flight plan was filed. Visual meteorological conditions prevailed. The pilot, the sole occupant, was not injured and the airplane was substantially damaged. According to the pilot, 2 minutes after takeoff he reduced the power to 2400 RPM. The engine decelerated by itself to 1000 RPM, hesitated and then stopped producing power completely. He applied carburetor heat and switched fuel tanks. He was unable to restart the engine. The pilot attempted to glide to a road. During the glide a vehicle pulled out onto the road and the pilot had to pull up to miss the vehicle. He was unable to lower the nose quickly enough to land before striking the wires at the far end of the selected forced landing area. The airplane struck the wires and "cartwheeled" to a stop. On scene examination of the engine by an FAA Inspector showed no external damage to the engine. Internal mechanical continuity was established and the engine rotated freely. The airplane's fuel system contained fuel which was blue in color. The position of the fuel selector during the takeoff and short flight was undeterminable because the fire department turned the fuel selector off. According to the FAA Inspector, he was unable to determine a mechanical reason for the loss of power.

Probable Cause and Findings

THE LOSS OF ENGINE POWER FOR UNDETERMINED REASONS AND THE LACK OF A SUITABLE FORCED LANDING AREA.

 

Source: NTSB Aviation Accident Database

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