Casualties unknown

Border Patrol Surveillance Aircraft Collides with Terrain in Mountains (N1324M)

Deming, WA, US

On October 23, 1998, a Cessna 182P (registration N1324M) was involved in an aviation accident near Deming, WA. Investigators recorded the probable cause as: Terrain clearance was not maintained for undetermined reasons. Mountainous terrain was a factor. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 2026-07-04Data APIEditorial standards

During a routine Border Patrol surveillance flight, an aircraft struck treetops and then mountainous terrain. Investigators found no evidence of mechanical failure.

Incident Overview

Aircraft conducting a routine Border Patrol surveillance mission collided with mountainous terrain. According to witness observations and evidence at the accident site, the aircraft first struck several tree tops while maintaining a straight-and-level attitude before impacting the rising terrain.

Investigation Findings

Post-accident investigation revealed no indications of mechanical failure or malfunction. The aircraft's flight path and condition at impact were consistent with controlled flight into terrain, though the investigation did not determine a definitive cause.

Scene Evidence

Debris patterns and tree damage indicated the aircraft was in a level attitude at initial tree contact, suggesting no unusual maneuvers or loss of control prior to impact. The terrain rose steeply beyond the tree line, resulting in the subsequent collision.

Frequently asked questions

What happened in the 23 Oct 1998 Cessna 182P accident near Deming, WA?

During a routine Border Patrol surveillance flight, an aircraft struck treetops and then mountainous terrain. Investigators found no evidence of mechanical failure.

What aircraft was involved and where did it happen?

The accident on 23 Oct 1998 involved a Cessna 182P, registration N1324M, at Deming, WA.

What was the probable cause of the accident?

Terrain clearance was not maintained for undetermined reasons. Mountainous terrain was a factor.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001211X11346. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.