Casualties unknown

Aircraft Crashes into Gulf of Mexico After Suspected Engine Failure on Takeoff (N3905G)

Grand Isle, US

On August 30, 1986, a Bell 206L-1 (registration N3905G) was involved in an aviation accident near Grand Isle. 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 2026-07-04Data APIEditorial standards

An aircraft crashed into the Gulf of Mexico shortly after takeoff from an offshore platform following a suspected engine failure. The pilot reported a loud squeal and loss of power, then attempted emergency floats unsuccessfully. The pilot escaped and swam back to the platform.

Accident Overview

The aircraft crashed into the Gulf of Mexico after a suspected engine failure shortly after lifting off from an offshore platform. The wreckage sank and was never recovered.

Pilot Account

The pilot stated that during the climb, at 40 knots and 200 feet above the water, he heard a loud squeal, followed by a low RPM audio warning and a loss of engine power. He attempted to inflate the emergency floats two or three times but was unsuccessful. The aircraft then made a hard landing on the water, rolled over, and sank.

Aftermath

The pilot extricated himself from the aircraft and swam back to the rig. He was found several minutes later on the lower boat deck. The wreckage of the aircraft was never located.

Frequently asked questions

What happened in the 30 Aug 1986 Bell 206L-1 accident near Grand Isle?

An aircraft crashed into the Gulf of Mexico shortly after takeoff from an offshore platform following a suspected engine failure. The pilot reported a loud squeal and loss of power, then attempted emergency floats unsuccessfully. The pilot escaped and swam back to the platform.

What aircraft was involved and where did it happen?

The accident on 30 Aug 1986 involved a Bell 206L-1, registration N3905G, at Grand Isle.

Investigation report by the U.S. National Transportation Safety Board (NTSB) historical archive. Original record: https://carol.ntsb.gov/event/20001213X34494. This page is a structured re-presentation; facts and quotes are in the National Transportation Safety Board (NTSB), United States.