Casualties unknown

2003-02-20: Aerospatiale AS-350-B3 (N439AE) — Clyde, TX

Clyde, TX, US

On February 20, 2003, an Aerospatiale AS-350-B3 (registration N439AE) was involved in an aviation accident near Clyde, TX. Investigators recorded the probable cause as: The pilot was unaware of the descent rate and was unable to slow the descent prior to impacting the 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 1781061362Data APIEditorial standards

A helicopter landed hard on a roadway after the pilot encountered instrument meteorological conditions during a repositioning flight. The pilot was unaware of the descent rate and unable to slow the descent prior to impact.

Background

The helicopter was on a repositioning flight intended to pick up a patient at another hospital. Before departure, the pilot checked the weather conditions. At the time of departure, the ceiling was reported at 1,100 feet and visibility at 7 miles.

Flight Details

Shortly after departure, the weather began to deteriorate. The helicopter encountered instrument meteorological conditions (IMC). The flight paramedic noted that the weather deteriorated rapidly during the flight and requested multiple times that the pilot abort the mission.

Accident Sequence

Prior to reversing direction, the pilot reduced speed and initiated a descent. However, the pilot was not aware of the rate of descent and was unable to arrest it before the helicopter struck the terrain. The helicopter subsequently landed hard and came to rest upright on a roadway.

Probable Cause

The investigation stated that the pilot was unaware of the descent rate and was unable to slow the descent prior to impacting the terrain.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20030318X00355. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.