NTSB Identification: SEA85LA152.
The docket is stored on NTSB microfiche number 28142.
Accident occurred Thursday, June 27, 1985 in BURNS, OR
Aircraft: PIPER PA-25-235, registration: N6647Z
Injuries: 1 Fatal.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

DURING AERIAL APPLICATIONS THE PILOT CLEARED A RISE, GOT A DOWN DRAFT, STRUCK TREES AND THEN STALLED STRIKING THE GROUND WITH LITTLE FORWARD MOTION. AN INTENSE EXPLOSION AND FIRE FOLLOWED. THE FIRE ORIGIN WAS IN THE AREA OF THE FIBERGLASS FUEL TANK. AN OPTIONAL FUEL TANK ASSEMBLY REPLACEMENT WITH A RUBBER FUEL CELL LINER HAS BEEN AVAILABLE FOR YEARS FOR THIS AIRCRAFT, BUT THIS AIRCRAFT WAS EQUIPPED WITH THE ORIGINAL FIBERGLASS FUEL TANK.

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

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


Contributing Factors

WEATHER CONDITION..DOWNDRAFT

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