ASN Wikibase Occurrence # 31902
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: | 12-MAR-1981 |
| Time: | c. 15:12 LT |
| Type: |  Sikorsky S-76A |
| Owner/operator: | Bristow Helicopters |
| Registration: | G-BGXY |
| MSN: | 760021 |
| Fatalities: | Fatalities: 4 / Occupants: 4 |
| Other fatalities: | 0 |
| Aircraft damage: | Written off (damaged beyond repair) |
| Category: | Accident |
| Location: | South Kirkton, near Peterhead, Aberdeenshire -
 United Kingdom
|
| Phase: | En route |
| Nature: | Training |
| Departure airport: | Aberdeen Airport, Dyce (ABZ/EGPD) |
| Aberdeen Airport, Dyce (ABZ/EGPD) | |
| Investigating agency: | AIB |
| Confidence Rating: |  Information verified through data from accident investigation authorities |
Broke up in flight after a main rotor blade separated due to a fatigue failure of the spindle, killing all four persons on board.
Blade spindle loading had increased due to wear of a dry lubricated bearing and load had increased due to a deburring technique that did not replicate that tested during certification.
AAIB recommended that spindles be inspected after 200 flying hours, instead of 300, and replaced completely after 300 hours.
Another S-76A (PT-HKB) had crashed on 23 Mar 1980 after a spindle failure. AAIB note that G-BGXY suffered its failure 12 Mar 1981 prior to maintenance instructions for a dimensional check being issued after the accident to PT-HKB (though they had been drafted some months prior).
Sources:
https://www.caa.co.uk/docs/HistoricalMaterial/G-BGXY.pdf
http://aviation-safety.net/wikibase/wiki.php?id=33292
https://www.gov.uk/aaib-reports/9-1983-sikorsky-s-76a-spirit-g-bgxy-12-march-1981
Accident investigation:
 |
|
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Sep-2008 01:00 | ASN archive | Added |
| 11-Jun-2010 12:32 | TB | Updated [Date, Time, Aircraft type, Registration, Cn, Operator, Total fatalities, Total occupants, Other fatalities, Location, Country, Phase, Nature, Departure airport, Source, Damage, Narrative, Plane category, ] |
| 17-Nov-2012 13:21 | Dr. John Smith | Updated [Time, Departure airport, Source, Narrative] |
| 25-Nov-2012 12:09 | TB | Updated [Time, Source, Narrative] |
| 04-Jun-2013 17:34 | Dr. John Smith | Updated [Source, Narrative] |
| 23-Oct-2015 18:28 | Dr.John Smith | Updated [Location, Departure airport, Destination airport, Source, Narrative] |
| 28-Mar-2016 18:24 | Aerossurance | Updated [Time, Location, Source, Narrative] |
| 09-May-2016 13:20 | Aerossurance | Updated [Narrative] |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
