ASN Wikibase Occurrence # 146976
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| Date: | Monday 25 May 1998 |
| Time: | 18:50 UTC |
| Type: |  Aérospatiale / BAC Concorde 102 |
| Owner/operator: | British Airways |
| Registration: | G-BOAC |
| MSN: | 204 |
| Year of manufacture: | 1975 |
| Fatalities: | Fatalities: 0 / Occupants: 64 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Atlantic Ocean, 60 nm north of Isles of Scilly, Cornwall -
 United Kingdom
|
| Phase: | En route |
| Nature: | Passenger - Scheduled |
| Departure airport: | London-Heathrow Airport (LHR) |
| Investigating agency: | AAIB |
| Confidence Rating: |  Accident investigation report completed and information captured |
While climbing through FL410 over the Atlantic Ocean, 60 nautical miles north of Isles of Scilly, Cornwall, a slight rumble was experienced, which turned out to be the separation of a section of the left hand middle elevon (5 feet x 3 feet). The captain decided to return to Heathrow.
CONCLUSIONS:
1. The reason for failure of elevon 3L S/No 1006R could not be established, but circumstantially it may have originated in the repaired trailing edge area.
2. The most likely failure scenario probably involved the growth of a relatively small disbonded area to a critical size and subsequent instantaneous failure.
3. The growth of the suspected disbond was not detected by NDE, despite an inspection programme well in excess of mandatory requirements.
4. The NDE techniques applicable at the time neither required nor were capable of examining metal-metal bond lines for flaws. As such approximately 50% of the repair accomplished at the trailing edge was not inspectable.
5. Despite the almost complete loss of integrity of the surface, the effects on controllability of the aircraft were negligible. This corroborates the results of a theoretical and experimental study conducted by the manufacturers which was presented to the investigation team and also came to this conclusion.
Accident investigation:
 |
|
Sources:
1. AAIB Bulletin No: 12/2000
2. AAIB: https://assets.digital.cabinet-office.gov.uk/media/5422edf640f0b613460001dd/dft_avsafety_pdf_500464.pdf
3. FAA: https://siteapps.caa.co.uk/g-info/rk=BOAC
History of this aircraft
Other occurrences involving this aircraft
| 29 December 1978 | G-BOAC | British Airways | 0 | near New York, NY |  |
unk |
| Engine failure | ||||||
| 8 March 1984 | G-BOAC | British Airways | 0 | New York-John F. Kennedy International Airport, NY (JFK/KJFK) | |
min |
| Tire failure | ||||||
| 11 August 1987 | G-BOAC | British Airways | 0 | New York-John F. Kennedy International Airport, NY (JFK/KJFK) | |
unk |
| Tire failure | ||||||
| 9 March 1988 | G-BOAC | British Airways | 0 | London | |
unk |
| Tire failure | ||||||
| 13 June 2003 | G-BOAC | British Airways | 0 | North Atlantic, between London Heathrow and JFK New York |  |
min |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 26-Jul-2012 07:21 | harro | Added |
| 04-Mar-2016 18:11 | Dr.John Smith | Updated [Location, Source, Narrative] |
| 10-Jul-2016 20:54 | Dr.John Smith | Updated [Location, Country, Narrative] |
Corrections or additions? ... Edit this accident description
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