NTSB Identification: SEA96GA129.
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Accident occurred Friday, June 14, 1996 in GRAND VIEW, ID
Probable Cause Approval Date: 07/28/1997
Aircraft: Cessna 182R, registration: N6356N
Injuries: 3 Minor.

: 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 public aircraft accident report.

The pilot inadvertently flew into a box canyon or area of rising terrain, while performing low altitude reconnaissance on a Civil Air Patrol mission. When he determined that he could not outclimb the terrain or turn to the right, he made a left turn. The airplane collided with terrain across a slope of about 15 degrees and nosed over after initial impact. The pilot and two observers sustained minor injuries. The airplane was equipped with a cargo net, but the net was not used to secure cargo, which included a heavy steel instrument panel security lock device. The pilot used a hand-held radio to communicate with air carrier aircraft to facilitate rescue.

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

failure of the pilot to maintain clearance from mountainous terrain in a box canyon. The mountainous terrain and box canyon, limiting the pilot's ability to climb or maneuver and maintain sufficient altitude in the canyon, were related factors.

Full narrative available

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