Casualties unknown

1982-04-15: Bell 47G-2 (N2879B) — Valley Helicopters — Stockton, CA

Stockton, CA, US

On April 15, 1982, a Bell 47G-2 (registration N2879B) operated by Valley Helicopters was involved in an aviation accident near Stockton, CA. 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 was destroyed after its tail rotor struck an overhead wire during takeoff. The pilot had landed to pick up a flagger and attempted departure, but the wire strike caused a loss of tail rotor control and subsequent ground impact.

Accident Overview

A helicopter was demolished following an accident that occurred during takeoff from a driveway. The pilot had previously landed to pick up a flagger and transport him to the end of the field. The landing was conducted facing north on a north-south oriented driveway. An overhead electrical line was present along the east side of the driveway.

Sequence of Events

During the takeoff, the pilot first moved the helicopter laterally to the west, then initiated a turn to depart. The pilot believed the helicopter would clear the overhead line; however, the tail rotor struck the wire. The impact caused the tail rotor to fail. Subsequently, the helicopter began to spin uncontrollably. The pilot performed a hovering autorotation in an attempt to manage the descent. During touchdown, while the helicopter was still spinning and moving across the ground, one of the skids failed. The main rotor blades then struck the ground, and the helicopter was subsequently demolished.

Damage

The helicopter sustained catastrophic damage: the tail rotor was severed upon striking the wire; a skid failed during the landing; the main rotor blades impacted the terrain; and the aircraft was destroyed.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20020917X02217. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.