Accident Hughes 369D N611WA, 16 May 2005
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ASN Wikibase Occurrence # 293789
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Time:11:45 LT
Type:Silhouette image of generic H500 model; specific model in this crash may look slightly different    
Hughes 369D
Owner/operator:Windward Aviation
Registration: N611WA
MSN: 590517D
Fatalities:Fatalities: 0 / Occupants: 4
Aircraft damage: Substantial
Location:Kihei, Hawaii -   United States of America
Phase: Unknown
Departure airport:Kahului Airport, HI (OGG/PHOG)
Destination airport:
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
The pilot performed an autorotation to a rocky shoreline following a partial loss of engine power during cruise flight. The helicopter's tail rotor blades impacted the ground when the helicopter slid aft on the slippery rocks following a successful landing. Post accident examination of the helicopter revealed the fuel system had been contaminated. Two days prior to the accident flight, the helicopter was examined after a fuel sample was found contaminated; however, the entire fuel system, specifically, the fuel tank, was not examined and cleaned. According to the manufacturer, if the helicopter experiences a fuel contamination, the corrective action is to "inspect and clean the fuel cell and start pump inlet screens if large amounts of foreign material are found in the engine driven fuel pump filter (or the optional airframe fuel filter if installed)." The accident helicopter was not equipped with the optional airframe fuel filter. Following the accident, the fuel tank cells were examined and contamination was noted in the tank and the fuel pump inlet screen and outlet. The contaminated fuel was introduced to the fuel system 2 days prior to the accident. The fuel came from a remotely located fuel tank that had a broken fuel tank cover, which allowed water and contaminants to enter the tank. The person who fueled the helicopter from the contaminated tank was not trained in the company's policy to conduct a daily quality assurance check, and had not sumped the tank, filters, and hoses.

Probable Cause: the partial loss of engine power due to fuel contamination. The fuel contamination was due to the failure of the maintenance personnel to ensure that the helicopter's fuel system had been thoroughly cleaned after a known previous contamination event, and the failure of company line personnel to follow the daily quality assurance checks on the company's remote based fuel supply.



Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year
Download report: Final report
Other occurrences involving this aircraft

7 Jul 2006 N611WA Windward Aviation, Inc. 0 Kihei, Hawaii sub


Revision history:

10-Oct-2022 13:33 ASN Update Bot Added

Corrections or additions? ... Edit this accident description

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