What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Enigne quit on low level seismic survey flight. Rotor decay on autorotation. Water in fuel and at source. (-23) during cruise flight for a oil company survey the engine quite suddenly at an altitude of about 150 feet. The pilot did a 180 autorotate into the wind landing. The landing was very hard, the aircraft was substantially damaged. There were no injuries to the pilot or pax. On scene investigation revealed a substantial amount of water and other contamination in the fuel strainer. Investigation into the fueling procedure revealed the fuel storage tank at the remote site was contaminated with water and dirt. The filter used on the tank was improperly installed and the tank was located so the drain was above the lowest part of the tank.
As the FAA filed it
ENIGNE QUIT ON LOW LEVEL SEISMIC SURVEY FLIGHT. ROTOR DECAY ON AUTOROTATION. WATER IN FUEL AND AT SOURCE. (-23) DURING CRUISE FLIGHT FOR A OIL COMPANY SURVEY THE ENGINE QUITE SUDDENLY AT AN ALTITUDE OF ABOUT 150 FEET. THE PILOT DID A 180 AUTOROTATE INTO THE WIND LANDING. THE LANDING WAS VERY HARD, THE AIRCRAFT WAS SUBSTANTIALLY DAMAGED. THERE WERE NO INJURIES TO THE PILOT OR PAX. ON SCENE INVESTIGATION REVEALED A SUBSTANTIAL AMOUNT OF WATER AND OTHER CONTAMINATION IN THE FUEL STRAINER. INVESTIGATION INTO THE FUELING PROCEDURE REVEALED THE FUEL STORAGE TANK AT THE REMOTE SITE WAS CONTAMINATED WITH WATER AND DIRT. THE FILTER USED ON THE TANK WAS IMPROPERLY INSTALLED AND THE TANK WAS LOCATED SO THE DRAIN WAS ABOVE THE LOWEST PART OF THE TANK.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.