Helicopter hard landing following encounter with IMC

Casualties unknown • Clyde, TX, US

A helicopter experienced a hard landing after encountering instrument meteorological conditions during a repositioning flight intended for a medical transport.

What happened

During a repositioning flight, the pilot encountered instrument meteorological conditions (IMC). Before departing, the pilot had checked the weather for a mission to retrieve a patient from another hospital. At the time of departure, the pilot reported a ceiling of 1,100 feet and visibility of 7 miles.

Shortly after takeoff, the weather began to deteriorate. The flight paramedic on board reported that conditions worsened rapidly while en route and made multiple requests for the pilot to abort the flight. In an attempt to reverse direction, the pilot slowed the aircraft and initiated a descent. However, the pilot was unaware of the specific rate of descent and could not arrest the descent before impacting the terrain. The helicopter subsequently experienced a hard landing and came to rest upright on a roadway.

Findings

  • The pilot was unaware of the aircraft's descent rate during the maneuver.
  • The pilot was unable to slow the descent prior to terrain impact.

Probable cause

The pilot's failure to maintain awareness of the aircraft's descent rate while attempting to reverse course in deteriorating weather conditions.

Frequently asked questions

What happened in the 2003-02-20 Aerospatiale AS-350-B3 accident near Clyde, TX?

A helicopter experienced a hard landing after encountering instrument meteorological conditions during a repositioning flight intended for a medical transport.

What aircraft was involved and where did it happen?

The accident on 2003-02-20 involved a Aerospatiale AS-350-B3, registration N439AE, at Clyde, TX.

What was the probable cause of the accident?

The pilot's failure to maintain awareness of the aircraft's descent rate while attempting to reverse course in deteriorating weather conditions.

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.

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