NTSB Identification: SEA88LA135.
The docket is stored on NTSB microfiche number 36315.
Accident occurred Thursday, July 21, 1988 in COLFAX, WA
Probable Cause Approval Date: 04/14/1989
Aircraft: SCHWEIZER G164A, registration: N8974H
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.

ON DEPARTURE WITH A LOAD OF CHEMICAL, AG PLT ATTEMPTED TO OUTCLIMB RISING TERRAIN AHEAD. THE AIRCRAFT COLLIDED WITH TERRAIN IN A STALL/MUSH.

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

PREFLIGHT PLANNING/PREPARATION..IMPROPER..PILOT IN COMMAND

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

CLEARANCE..MISJUDGED..PILOT IN COMMAND

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

AIRSPEED..NOT MAINTAINED..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..RISING


Contributing Factors

PERFORMANCE DATA..NOT USED..PILOT IN COMMAND


Contributing Factors

LOAD JETTISON..NOT PERFORMED..PILOT IN COMMAND

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