NTSB Identification: DEN83LA202.
The docket is stored on NTSB microfiche number 22247.
Accident occurred Sunday, August 28, 1983 in BABB, MT
Aircraft: PIPER PA-11-90, registration: CFGNB
Injuries: 2 Uninjured.

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 PILOT SAID THAT BEFORE TAKEOFF, HE FUELED THE LEFT TANK OF THE AIRCRAFT. THE RIGHT TANK WAS REPORTEDLY EMPTY. FIVE OR TEN MINUTES AFTER TAKEOFF THE PILOT PUT THE ACFT INTO A 5 DEGREE LEFT FORWARD SLIP FOR ABOUT 30 SECONDS. AS SOON AS THE PILOT RETURNED THE ACFT TO LEVEL FLIGHT, THE ENGINE LOST POWER. THE PILOT ATTEMPTED VARIOUS PROCEDURES, BUT COULD NOT RESTORE POWER TO THE ENGINE. HE MADE A FORCED LANDING ON A SMALL POND. AS THE ACFT SLOWED AND CAME OFF THE STEP, THE LEFT FLOAT STRUCK SUBMERGED WILLOW STICKS AND SANK. THE LEFT WING DROPPED AND STRUCK THE WATER. THE PILOT SAID THAT THIS FUEL TANK DOES NOT HAVE A DRAIN AND UNLESS YOU DRAW APRX 1 GALLON OF FUEL THRU THE GASCOLATOR, WATER WILL NOT SHOWUP.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

FUEL SYSTEM..CONTAMINATION


Contributing Factors

TERRAIN CONDITION..HIDDEN OBSTRUCTION(S)

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