NTSB Identification: NYC05LA017.
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Accident occurred Sunday, November 14, 2004 in London, KY
Probable Cause Approval Date: 07/07/2005
Aircraft: Labhart Kolb Twinstar Mk III, registration: N83NK
Injuries: 1 Fatal,1 Serious.
NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.
The airplane was equipped with two semi opaque 5-gallon fuel tanks that simultaneously fed into the engine. The airplane was not equipped with a fuel strainer. Prior to the accident flight, 1 gallon of automobile gasoline was added to each tank, which brought the total amount of fuel on board to approximately 8 gallons. The pilot completed a preflight inspection of the airplane, and departed the airport. After two takeoffs and landings at the airport, the pilot boarded a passenger, and completed another takeoff and landing. While in the traffic pattern for another landing, the engine lost all power. The pilot attempted to glide to the runway, but the airplane impacted up-sloping terrain about 2-3 feet prior to the runway. Examination of the wreckage revealed contamination in the fuel tanks, fuel lines, fuel filter, and carburetor bowls. The engine was subsequently test run with a clean fuel supply, and it ran continuously with no abnormalities noted.
The National Transportation Safety Board determines the probable cause(s) of this accident to be: The pilot's inadequate preflight inspection, which resulted in a total loss of engine power due to fuel contamination. A factor was the lack of an installed fuel strainer. Full narrative available
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