Casualties unknown

2001-09-05: Beech 58 (N18414) — Ashland, OR

Ashland, OR, US

On September 5, 2001, a Beech 58 (registration N18414) was involved in an aviation accident near Ashland, OR. Investigators recorded the probable cause as: The pilot's inadvertent entry into a cloud base while maneuvering below an overcast in mountainous terrain, resulting in collision with terrain. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive; 8 related events involving the same aircraft type or operator are linked below.

Sourcesthe U.S. National Transportation Safety Board (NTSB) historical archivePrimary reportUpdated 1781061362Data APIEditorial standards

A VFR departure under solid overcast led to a terrain collision when the pilot inadvertently entered a cloud base while maneuvering in mountain valleys.

Accident Overview

An aircraft operating under visual flight rules (VFR) departed from an airport beneath a solid overcast layer. The flight proceeded in a direction that took it toward rising mountainous and hilly terrain.

Sequence of Events

In the area where the pilot approached the mountainous terrain, clouds were touching the tops of the ridges in all quadrants. However, visibility underneath the overcast was extensive. As the pilot attempted to maneuver the aircraft below the overcast within the restrictive environment of the mountain valleys, he inadvertently entered the cloud base. Shortly thereafter, the aircraft collided with terrain.

Probable Cause

The investigation identified the probable cause as the pilot's inadvertent entry into a cloud base while maneuvering below an overcast in mountainous terrain, resulting in collision with terrain.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20010924X01979. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.