ASN logo
ASN Wikibase Occurrence # 169024
Last updated: 20 November 2021
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information. If you feel this information is incomplete or incorrect, you can submit corrected information.

Date:01-OCT-1977
Time:14:18 UTC
Type:Silhouette image of generic S61 model; specific model in this crash may look slightly different
Sikorsky S-61N
Owner/operator:Bristow Helicopters Ltd
Registration: G-BBHN
MSN: 61-714
Fatalities:Fatalities: 0 / Occupants: 3
Other fatalities:0
Aircraft damage: Substantial
Location:North Sea, 48nm NE of Aberdeen -   United Kingdom
Phase: En route
Nature:Offshore
Departure airport:Venture 2 Oil Platform, North Sea
Destination airport:Aberdeen Airport, Dyce (ABZ/EGPD)
Investigating agency: AIB
Narrative:
Substantially damaged 1/10/1977 when ditched into the North Sea, 48 nautical miles north-east of Aberdeen, whilst en route between the Venture 2 Oil Platform and Aberdeen Airport. According to the following extract from the official AAIB report into the accident:

"DITCHING INITIATED DUE TO INCREASINGLY LOUD NOISE FROM ROTOR HEAD, SIMILAR TO LOOSE BLADE TAPE, ACCOMPANIED BY SEVERE VIBRATION. RESTRICTION OF CONTROL WAS FELT IN FORE & AFT MOVEMENT ALTHOUGH ALL COCKPIT INDICATIONS WERE NORMAL. DURING LANDING CONTROL WAS DIFFICULT WITH THRASHING OF CYCLIC STICK.

A LARGE WAVE SUBSEQUENTLY LIFTED THE NOSE UP & TO THE LEFT & THE A/C CAPSIZED WITHIN 30 SECONDS. THERE WAS INSUFFICIENT TIME TO DEPLOY THE SEA ANCHOR, THE LIFE RAFT COULD NOT BE EXTRACTED FROM THE FLOODED CABIN & NEITHER CREW NOR PAX WERE ADEQUATELY DRESSED FOR SURVIVAL. ALL RESCUED AFTER 53 MINUTES. PROBALE THAT A BLADE POCKET HAD FAILED".

Damage sustained to airframe: Per the AAIB report "Substantial damage followed the capsize" (of the aircraft) "The helicopter was salvaged three days after the accident, repaired and subsequently returned to service". However, a year later on 16/10/1978, the registration G-BBHN was cancelled by the CAA as "sold in Malaysia".

The S-61N became 9M-AWN with Bristow Helicopters (Malaysia) Ltd. In July 2004, it acquired US registry as N160J with Washington Times Aviation. in November 2005, it was re-registered in South Korea as HL9287 with Tongil Air in South Korea. As HL+287 it was written off on 27/2/2010, when it was burnt out after an emergency landing in South Korea

Sources:

1. AAIB: https://assets.digital.cabinet-office.gov.uk/media/5422fbeb40f0b6134200079f/8-1978_G-BBHN.pdf
2. CAA: https://www.caa.co.uk/docs/HistoricalMaterial/G-BBHN.pdf
3. https://www.helis.com/database/cn/23650/
4. http://www.griffin-helicopters.co.uk/accidentdetails.aspx?accidentkey=14327
5. https://www.flightglobal.com/pdfarchive/view/1979/1979%20-%200926.html

Accident investigation:
cover
  
Investigating agency: AIB
Status: Investigation completed
Duration:
Download report: Final report
Other occurrences involving this aircraft

27 Feb 2010 HL9287 Tongil Air 0 Siheung w/o


Images:

Photo of G-BBHN courtesy AirHistory.net


Aberdeen - Dyce (EGPD / ABZ)
30 April 1975; (c) Lewis Grant

Revision history:

Date/timeContributorUpdates
22-Aug-2014 17:20 Aerossurance Added
16-Aug-2015 18:02 TB Updated [Location, Source, Damage]
21-Oct-2015 20:13 Dr.John Smith Updated [Time, Operator, Location, Departure airport, Destination airport, Source, Narrative]

Corrections or additions? ... Edit this accident description