Casualties unknown

Pleasure Flight Ends in Mountain Terrain Collision (N4008Z)

Kapowsin, WA, US

On December 24, 1995, a Piper PA-18-150 (registration N4008Z) was involved in an aviation accident near Kapowsin, WA. Investigators recorded the probable cause as: The pilot's failure to maintain control of the airplane due to turbulent weather conditions, which resulted in a collision with terrain. 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 2026-06-10Data APIEditorial standards

A private aircraft crashed into mountainous terrain during a sightseeing flight amid turbulent weather conditions. No mechanical failures were detected during the post-crash investigation of the airframe and engine.

What happened

The accident occurred while the pilot was conducting a personal pleasure flight with the primary objective of sightseeing and observing wildlife, specifically elk. The aircraft was operating in a mountainous region characterized by rolling terrain. During the flight, other pilots in the vicinity reported windy and turbulent atmospheric conditions surrounding the mountains. The airplane ultimately collided with the ground in a nearly vertical attitude.

The investigation

Following the impact, investigators conducted a thorough examination of the airframe and engine components. The inspection focused on identifying any potential mechanical anomalies that could have contributed to the loss of control or collision. Upon completion of the postcrash analysis, no evidence was found to indicate a mechanical failure or malfunction of the aircraft systems.

Findings

The primary factors contributing to this accident were the turbulent weather conditions reported by other pilots in the area and the decision to continue flying into such an environment. The collision with terrain occurred while the pilot was engaged in recreational activities, highlighting the risks associated with visual flight rules operations in complex mountainous terrain under adverse meteorological conditions.

Probable cause

The pilot's failure to maintain control of the airplane due to turbulent weather conditions, which resulted in a collision with terrain.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001207X05079. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.