NTSB Identification: SEA86FA215.
The docket is stored on NTSB microfiche number 31302.
Nonscheduled 14 CFR
Accident occurred Thursday, August 21, 1986 in FRENCHGLEN, OR
Aircraft: CESSNA T207A, registration: N73569
Injuries: 6 Fatal.

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.

ALTHOUGH LOW ALTITUDE FLIGHT WITHIN THE GORGE WAS NOT IN ACCORDANCE WITH THE MISSION PROFILE THE PILOT ENTERED THE CANYON AND PROCEEDED UPSLOPE TOWARDS RISING TERRAIN. 87% OF THE PILOT'S EXTENSIVE FLIGHT EXPERIENCE WAS IN HELICOPTER AIRCRAFT AND HE HAD ACQUIRED AN ESTIMATED TOTAL OF ONLY 13 HOURS IN MAKE/MODEL AT THE TIME OF THE ACCIDENT. THE AIRCRAFT WAS SLIGHTLY OVER ITS GROSS WEIGHT AT THE TIME OF THE ACCIDENT AND HIGH DENSITY ALTITUDE CONDITIONS EXISTED. DURING THE PILOT'S ATTEMPT TO REVERSE DIRECTION AT THE END OF THE GORGE THE AIRCRAFT STALLED AND A LOSS OF CONTROL FOLLOWED. A STALL/SPIN MANEUVER RESULTED PLACING THE AIRCRAFT IN AN UNCONTROLLED DESCENT INTO THE TERRAIN.

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

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

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

AIRSPEED(VS)..NOT MAINTAINED..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..RISING


Contributing Factors

WEATHER CONDITION..HIGH DENSITY ALTITUDE


Contributing Factors

CLEARANCE..MISJUDGED..PILOT IN COMMAND


Contributing Factors

AIRCRAFT WEIGHT AND BALANCE..EXCEEDED..PILOT IN COMMAND


Contributing Factors

LACK OF TOTAL EXPERIENCE IN TYPE OF AIRCRAFT..PILOT IN COMMAND

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