NTSB Identification: SEA92LA056.
The docket is stored on NTSB microfiche number 47117.
Accident occurred Sunday, March 08, 1992 in DUFUR, OR
Probable Cause Approval Date: 09/28/1993
Aircraft: AERO COMMANDER S-2R, registration: N1763S
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.

THE PILOT WAS ENGAGED IN APPLYING HERBICIDE TO A WHEAT FIELD WHICH WAS CROSSED BY A DOUBLE SET OF POWER LINES. DURING A SWATH RUN AND WHILE FLYING EASTBOUND, THE AIRCRAFT'S CANOPY AND VERTICAL STABILIZER SNAGGED THE LOWEST SET OF WIRES WHICH WERE APPROXIMATELY 25 FEET ABOVE THE GROUND. THE AIRCRAFT WAS NOT EQUIPPED WITH AN UPPER FUSELAGE CABLE CUTTING SAFETY MECHANISM.

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

THE PILOT IN COMMAND'S MISJUDGMENT OF CLEARANCE WITH THE POWER LINES. FACTORS CONTRIBUTING TO THE ACCIDENT WERE: OBJECT (TRANSMISSION WIRE) AND SAFETY SYSTEM (NOT INSTALLED).

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