ASN Wikibase Occurrence # 177464
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| Date: | Sunday 28 June 2015 |
| Time: | 10:00 |
| Type: |  Bell 407 |
| Owner/operator: | Rotorcraft Leasing Corp (RLC) |
| Registration: | N311RL |
| MSN: | 53069 |
| Year of manufacture: | 1996 |
| Total airframe hrs: | 20567 hours |
| Engine model: | Allison 250-C47 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | South Timbalier 127, Gulf of Mexico -
 United States of America
|
| Phase: | Standing |
| Nature: | Offshore |
| Departure airport: | South Timbalier 127, Gulf of Mexico |
| SS-189B, GM | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The commercial pilot reported that he had landed the helicopter on the oil platform about 1 hour before the accident. He noted that the weather conditions were deteriorating west and north of the platform; he then decided to depart the platform, which did not have any weather monitoring systems installed. He had initiated the start sequence when a strong wind gust struck the platform and pushed the helicopter off of the raised helideck into the water. Witness reports corroborated the pilot’s account, and two of the witnesses reported that the helicopter blades were turning but had not yet reached flight idle speed. If a weather monitoring system had been available, the pilot might have decided not to depart the platform given the gusting wind conditions.
Probable Cause: The pilot's lack of awareness of the severity of the gusting winds, which led to the helicopter being pushed off of the oil platform by a wind gust during engine start. Contributing to the accident was the unavailability of a nearby weather monitoring system.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=N311RL
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Jul-2015 18:23 | Aerossurance | Added |
| 01-Jul-2015 18:25 | Aerossurance | Updated [Operator, Departure airport, Narrative] |
| 01-Jul-2015 21:31 | Geno | Updated [Source] |
| 30-Jul-2016 13:26 | Aerossurance | Updated [Time, Location, Departure airport, Source, Narrative] |
| 05-Oct-2016 23:19 | Aerossurance | Updated [Destination airport, Source, Narrative] |
| 21-Dec-2016 19:30 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 01-Dec-2017 13:42 | ASN Update Bot | Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
| 15-Jan-2022 10:48 | Aerossurance | Updated [Operator, Source] |
Corrections or additions? ... Edit this accident description
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