ASN Wikibase Occurrence # 345798
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| Date: | Wednesday 13 September 2023 |
| Time: | 23:15 LT |
| Type: |  Boeing 777-222ER |
| Owner/operator: | United Airlines |
| Registration: | N786UA |
| MSN: | 26938/52 |
| Year of manufacture: | 1997 |
| Fatalities: | Fatalities: 0 / Occupants: |
| Aircraft damage: | None |
| Location: | 30 nm W of Yarmouth, NS -
 Canada
|
| Phase: | En route |
| Nature: | Passenger - Scheduled |
| Departure airport: | Newark-Liberty International Airport, NJ (EWR/KEWR) |
| Roma-Fiumicino Airport (FCO/LIRF) | |
| Confidence Rating: |  Information verified through data from accident investigation authorities |
United Airlines flight UA510, a Boeing 777-222ER, was in cruise when the crew observed a cabin altitude warning annunciation on the EICAS display. The crew completed the checklist and performed an emergency descent. The aircraft descended to 9,000 ft and entered a hold while running checks to determine the next course of action. The crew declared an emergency and decided to return to KEWR where they landed without further issue.
Maintenance found ice in the ground air connection. The ground air connection duct valve was also found to be broken, not seated. The ground air check valve and associated gasket were replaced, checks were completed, and the aircraft was returned to service.
Sources:
TSB
https://www.flightradar24.com/data/aircraft/n786ua#32044d1f
History of this aircraft
Other occurrences involving this aircraft
| 13 December 1999 | N786UA | United Airlines | 0 | NW of London-Heathrow Airport (LHR/EGLL) |  |
non |
| Turbulence | ||||||
| 26 February 2007 | N786UA | United Airlines | 0 | London-Heathrow Airport (LHR) | |
min |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Sep-2023 12:14 | harro | Added |
| 21-Sep-2023 12:15 | harro | Updated |
Corrections or additions? ... Edit this accident description
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