Mulino, OR, USA
N2448
Peterson Dragonfly
The student pilot, who was also the owner/builder of the experimental aircraft, was conducting a local personal pleasure flight when the aircraft's engine suddenly lost power. Because he was unable to get the aircraft restarted, the pilot elected to attempt a forced landing in a nearby field. During the attempted landing, the aircraft encountered very rough terrain and sustained substantial damage. Although an initial inspection of the aircraft disclosed no anomalies or malfunctions in the engine, it was later determined that the pilot had altered the fuel system from that shown in the aircraft plans. That alteration created a situation where the engine was starved of fuel when the pilot turned on the electric fuel pump that transferred fuel to the header tank from a line downstream of the gascolator.
On November 23, 2002, approximately 1240 Pacific standard time, an experimental Peterson Dragonfly, N2448, impacted the terrain during an attempted forced landing in a rough field about three miles west of Mulino, Oregon. The student pilot, who was the sole occupant, received serious injuries, and the aircraft, which was built, owned, and operated by the pilot, sustained substantial damage. The 14 CFR Part 91 personal pleasure flight, which departed Mulino Airport, Mulino, Oregon, about 10 minutes prior to the accident, was being operated in visual meteorological conditions. No flight plan had been filed. The ELT, which was activated by the accident sequence, was turned off at the scene. According to the pilot, the aircraft's engine stopped suddenly while he was on a short flight to the west of Mulino. After the engine stopped, the pilot tried applying carburetor heat and then attempted a restart. When the engine did not start, he switched to the header tank and made sure that his electric fuel pump was on, and then tried a restart again, with no success. After attempting a third unsuccessful start, the pilot elected to attempt a forced landing in a nearby field. Although the pilot was able to make it to the field without engine power, during the touchdown on the very rough terrain, the aircraft sustained substantial damage. A post-accident inspection of the aircraft by the owner and an FAA Airworthiness inspector found no indication that there had been any anomaly or malfunction in the engine. A further inspection of the aircraft's systems revealed that the pilot had altered the fuel system from that described in the aircraft plans. The alteration performed by the pilot allowed fuel to be transferred to the header tank from a fuel line downstream of the gascolator bowl by way of an electrical fuel pump. In further discussions with the owner, the FAA inspector determined that just prior to the loss of power the pilot had turned on the subject pump. According to the inspector, both he and the owner agreed that the loss of power was due to the engine being starved of fuel when the pump was turned on in order to transfer fuel to the header tank. The aircraft, which had been manufactured in 2001, had been flown a total of about two hours.
Fuel starvation of the engine while in cruise flight due to the owner/builder's alteration of the fuel system from that shown in the aircrafts plans. Factors include very rough terrain in the area where the pilot found it necessary to make his forced landing.
Source: NTSB Aviation Accident Database
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