NTSB Identification: SEA83LA053.
The docket is stored on NTSB microfiche number 20278.
Accident occurred Monday, January 31, 1983 in WINTHROP, WA
Aircraft: CESSNA 172P, registration: N52243
Injuries: 2 Minor.

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 AIRCRAFT WAS CRASH-LANDED IN THE SNOW AFTER THE PILOT FLEW INTO A BOX CANYON. THE PILOT WAS FOLLOWING A HIGHWAY OVERSNOW COVERED TERRAIN AND TOOK A WRONG TURN. BY THE TIME THE ERROR WAS REALIZED, IT WAS TOO LATE TO REVERSE COURSE OR CLIMB OUT. A FORCED LANDING WAS EXECUTED INTO A SNOW FIELD.

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

IN-FLIGHT PLANNING/DECISION..IMPROPER..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..SNOW COVERED


Contributing Factors

TERRAIN CONDITION..MOUNTAINOUS/HILLY


Contributing Factors

TERRAIN CONDITION..RISING


Contributing Factors

WEATHER CONDITION..HIGH DENSITY ALTITUDE


Contributing Factors

PROPER CLIMB RATE..NOT POSSIBLE..PILOT IN COMMAND

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