FORT BENTON, MT, USA
N155LB
BENJAMIN PITTS S1U
THE ACFT CONTACTED A DIRT BANK DURING A FORCED LANDING IN A FIELD FOLLOWING A LOSS OF PWR SHORTLY AFTER TAKEOFF. A LANDING WAS MADE AT FORT BENTON ARPT WHERE THE ACFT WAS SERVICED WITH 11.85 GALLONS OF 100 OCT AVGAS. POST ACCIDENT EXAMINATION OF THE ACFT REVEALED WATER CONTAMINATION IN THE CARBURETOR BOWL AND FUEL SYSTEM. A 1 QT JAR WAS FILLED WITH FUEL FROM THE FUEL LINE TO THE CARBURETOR. A 17/32 INCH LAYER OF AVGAS WAS PRESENT ON TOP OF WATER WHICH FILLED THE REMAINING PORTION OF THE JAR. THE ACFT WAS REFUELED FROM AN UNDERGROUND TANK. THERE WAS NO FILTERIZATION ELEMENT ON THE REFUELING EQUIPMENT.
Source: NTSB Aviation Accident Database
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