Casualties unknown

2001-07-21: Cessna 120 (N90077) — Troutdale, OR

Troutdale, OR, US

On July 21, 2001, a Cessna 120 (registration N90077) was involved in an aviation accident near Troutdale, OR. Investigators recorded the probable cause as: The pilot focused on his GPS indications while concentrating on flying near Class Delta airspace, inadvertently entered a low-level overcast cloud layer, and was unable to initiate a 180-degree turn before the left wing struck a tree. 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 1781061362Data APIEditorial standards

A pilot concentrating on flying near Class Delta airspace focused on GPS indications and inadvertently entered a low-level overcast cloud layer; the left wing struck a tree before a 180-degree turn could be initiated.

Incident Overview

While flying just beyond the boundary of Class Delta airspace, the pilot concentrated on the indications of his Global Positioning System (GPS). During this focus, he inadvertently entered a low-level overcast cloud layer. The pilot estimated that he was in the clouds for less than ten seconds before the left wing of the aircraft impacted a tree. He was unable to initiate a 180-degree turn prior to the collision.

Sequence of Events

The pilot was operating the aircraft near the edge of Class Delta airspace. His attention was directed to the GPS display, and as a result, he did not notice the approaching cloud layer. The aircraft entered the low-level overcast clouds unexpectedly. The pilot attempted to execute a 180-degree turn to exit the clouds, but the left wing struck a tree before the maneuver could be completed.

Contributing Factor

The source identifies the pilot's focus on GPS indications while concentrating on the airspace boundary as the reason for inadvertently entering the cloud layer. No other factors are mentioned.

Damage and Injuries

The source does not specify any damage to the aircraft or injuries to the pilot or occupants. Only the fact that the left wing impacted a tree is reported.

Additional Details

The pilot's estimate of being in the clouds for less than ten seconds before the collision is the only temporal information provided. No information about weather conditions beyond the presence of a low-level overcast cloud layer is given. The specific location, aircraft type, registration, engine count, date, operator, time of day, and ATC involvement are not mentioned in the source.

Probable cause

The pilot focused on his GPS indications while concentrating on flying near Class Delta airspace, inadvertently entered a low-level overcast cloud layer, and was unable to initiate a 180-degree turn before the left wing struck a tree.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20010724X01505. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.