NTSB Identification: DEN89LA049.
The docket is stored on NTSB microfiche number 37864.
Accident occurred Friday, December 23, 1988 in WINNETT, MT
Probable Cause Approval Date: 12/03/1989
Aircraft: PIPER PA-11, registration: N5570H
Injuries: 1 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 WAS TAKING OFF FROM A FARM STRIP WITH A 10 KT HEAD WIND. THE PLT SAID THE SUN WAS SHINING AT THE TIME OF THE ACDT BUT THERE HAD BEEN SNOW SHOWERS IN THE AREA. HE SAID THE LIFTOFF WAS NORMAL BUT AT ABOUT 15 TO 18 FT AGL THE ACFT STALLED AND CRASHED. AFTER THE ACDT THE PLT FOUND A THIN LAYER OF ICE ON THE WINGS. HE SAID THE SUN PROBABLY MELTED SNOW ON THE WINGS, WHILE THE ACFT WAS PARKED, WHICH THEN FROZE DURING THE TAKEOFF. THE TEMP AT THE TIME OF THE ACDT WAS ESTIMATED TO BE 20-25 DEG F. THE PLT REPORTED HE HAD FLOWN 10 HRS IN THE PRECEDING 24.

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

AIRCRAFT PREFLIGHT..INADEQUATE..PILOT IN COMMAND

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

STALL..INADVERTENT..PILOT IN COMMAND


Contributing Factors

WING..ICE


Contributing Factors

FATIGUE(FLIGHT SCHEDULE)..PILOT IN COMMAND

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