On January 27, 1993, a Hughes 369D (registration N6612C) operated by Haverfield Corporation was involved in an aviation accident near Pascagoula, MS. Investigators recorded the probable cause as: LOSS OF ENGINE POWER DUE TO UNDETECTED FOREIGN MATTER CONTAMINATION OF THE ENGINE FUEL CONTROL. THE LACK OF A SUITABLE LANDING AREA WAS A FACOTR IN THE ACCIDENT. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 4 related events involving the same aircraft type or operator are linked below.
A helicopter experienced an engine power loss while approaching an airport, prompting an autorotation descent through trees into water. Postcrash examination found a clogged fuel control inlet screen, but the exact cause of power loss was not determined.
Incident Sequence
The pilot reported that while approximately 4 miles from the airport at an altitude of 300 feet, the helicopter yawed and the engine out light and audio warnings activated. The auto reignition light also illuminated. The engine lost power, and the helicopter could not maintain altitude. The pilot initiated an autorotation, during which the helicopter descended through trees and collided with water. After impact, the helicopter rolled onto its right side and filled with water. The crew exited the helicopter and remained at the crash site for one day awaiting rescue, after which they walked to safety.
Postcrash Examination
Examination of the engine assembly revealed no evidence to indicate the reason for the power loss. However, inspection of the engine fuel system uncovered that the fuel control inlet screen was clogged with metal contamination and was bypassing the filter. No other evidence indicating the reason for the loss of power was noted.