Casualties unknown

2002-12-31: Bell 206-L4 (N177AL) — High Island 471

High Island 471, US

On December 31, 2002, a Bell 206-L4 (registration N177AL) was involved in an aviation accident near High Island 471. Investigators recorded the probable cause as: The pilot's attempt to takeoff during known adverse weather conditions and failure to maintain control of the helicopter while maneuvering. Contributing factors were the gusty and high wind conditions. 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 lost control of a helicopter while repositioning on an offshore platform during gusty winds, resulting in damage to the tail boom, skids, and main rotor mast. The helicopter came to rest on the platform's safety fence.

Incident Overview

On the morning of the accident flight, the pilot completed a preflight inspection of the helicopter and found no discrepancies. Due to gusty wind conditions, the pilot delayed the departure until the winds subsided. After an uneventful engine start, the helicopter lifted off the platform to a hover of 3 to 5 feet. The pilot then turned the helicopter 180 degrees into the wind.

Sequence of Events

Shortly after the turn, a sudden wind gust of approximately 30 knots occurred. The pilot responded by setting the helicopter back down onto the platform. Observing that the wind gusts had subsided to 20 knots, the pilot attempted takeoff again. During the second takeoff, the helicopter "immediately started to bounce uncontrollably and [slide] to the left (south)." The helicopter subsequently came to rest upright on the safety fence of the platform.

Damage Assessment

The accident resulted in a partial separation of the tail boom, as well as bending of the skids and the main rotor mast. An examination of the helicopter revealed no pre-accident anomalies.

Contributing Factors

No probable cause was determined from the available information.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20030106X00015. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.