SACATON, AZ, USA
N6657C
PZL-Mielec PZL-M-18
THE PILOT EXPERIENCED A POWER SURGE AND SUBSEQUENT LOSS OF ENGINE POWER DURING AN AERIAL APPLICATION FLIGHT. HE MADE A FORCED LANDING INTO A DRY RIVER BED. EXAMINATION OF THE ENGINE REVEALED A DECOUPLING OF THE ACCESSORY DRIVE THAT RUNS THE HIGH PRESSURE ENGINE-DRIVEN FUEL PUMP.
On August 9, 1995, at 0500 hours mountain standard time, the pilot of a Mielec WSK-PZL-M-18 aircraft, N6657C, experienced a power surge and subsequent loss of engine power during a 14 CFR Part 137 aerial application flight near Sacaton, Arizona. The pilot made a forced landing in a riverbed. The aircraft was substantially damaged and the pilot was not injured. Visual meteorological conditions existed at the time. The aircraft departed from a local agricultural strip at 0415 hours. The inspection of the engine by the FAA revealed a decoupling of the accessory drive that runs the high pressure engine-driven fuel pump. The engine had a total time of 6,307 hours and 164 hours since an overhaul.
The loss of engine power due to a decoupling of the accessory drive that runs the high pressure engine-driven fuel pump.
Source: NTSB Aviation Accident Database
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