1 fatality

Pilot Reports Pitch Control Problems Before Crash at Caernarfon Airport (N250AC)

Caernarfon, United KingdomLanding (descent or approach)

On September 6, 2017, a Piper PA-31-310 Navajo (registration N250AC) operated by Sky West Aviation was involved in an aviation accident near Caernarfon, United Kingdom during landing or approach. One person was killed. Investigators recorded the probable cause as: After reporting pitch control problems, N250AC made a direct diversion with a significantly unstable approach, in a clean configuration, to Runway 25 at Caernarfon Airport. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 8 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-11Data APIEditorial standards

A pilot reported pitch control problems after takeoff from a private airstrip in Cheshire, diverted to Caernarfon Airport, and struck Runway 25 with gear and flaps retracted at high speed. The aircraft was destroyed; elevator trim was found in a nose-down position.

Accident Overview

Approximately 20 minutes after takeoff from a private airstrip in Cheshire, the pilot reported pitch control problems and stated his intention to divert to Caernarfon Airport. About 5 minutes later, the aircraft struck Runway 25 at Caernarfon Airport. The landing gear and flaps were retracted, the aircraft was at high speed, and there was no noticeable flare manoeuvre. The aircraft was destroyed.

Flight and Events

The flight originated from a private airstrip in Cheshire. After reporting pitch control issues, the pilot diverted directly to Caernarfon Airport. The approach was significantly unstable, and the aircraft was in a clean configuration. The impact occurred on Runway 25.

Wreckage and Investigation

The elevator trim was found in a significantly nose-down position. The reason for this could not be determined, but it is likely that it would have caused the pilot considerable difficulty in maintaining control of the aircraft. The extensive fire damage to the wreckage and the limited recorded information made it difficult to determine the cause of this accident with a high level of confidence. A possible scenario is a trim runaway.

Safety Actions

As a result of this accident, both the CAA and the EASA are taking safety action to promote awareness for trim runaways.

Probable cause

After reporting pitch control problems, N250AC made a direct diversion with a significantly unstable approach, in a clean configuration, to Runway 25 at Caernarfon Airport. The elevator trim was found in a nose-down position and, whilst the reason for this could not be determined, it is likely that it caused the pilot considerable difficulty in controlling the aircraft. The aircraft struck Runway 25 at Caernarfon Airport, with landing gear and flaps retracted, at high speed, and with no noticeable flare manoeuvre. The extensive fire damage to the wreckage and the limited recorded information made it difficult to determine the cause of this accident with a high level of confidence. It is possible there was a nose-down trim runaway that the pilot was unable to stop.