NTSB Identification: SEA84FA011.
The docket is stored on NTSB microfiche number 22464.
Accident occurred Sunday, October 23, 1983 in BREWSTER, WA
Aircraft: BOEING A75N1, registration: N49385
Injuries: 1 Serious.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

THE PLT WAS POSITIONING THE ACFT FOR SWATH RUNS WHEN IT CRASHED INTO RISING TERRAIN ON THE SIDE OF A HILL NEXT TO A VALLEY. THE PLT HAD PLANNED TO MAKE SWATH RUNS OVER AN ORCHARD IN THE VALLEY. DURING IMPACT, HE RECEIVED SERIOUS HEAD INJURIES & COULD NOT RECALL THE CIRCUMSTANCES OF THE MISHAP. HOWEVER, HE WAS ABLE TO EXIT THE ACFT BEFORE FIRE HAD SPREAD TO THE COCKPIT. WITNESSES ABOUT 1 MI FROM THE CRASH SITE REPORTED HEARING A STEADY ENGINE SOUND UNTIL THE ACFT IMPACTED. THE ACFT REMAINED INTACT & THE GROUND SCARS SHOWED THAT IT HAD MOVED ABOUT 6 FT FORWARD & 4 FT LEFT AFTER IMPACTING.

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

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

STALL/MUSH..INADVERTENT..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..MOUNTAINOUS/HILLY


Contributing Factors

TERRAIN CONDITION..RISING

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