Created Tuesday, Oct 18th 2022 19:31Z, last updated Tuesday, Oct 25th 2022 19:32Z
An American Airlines Boeing 787-9, registration N823AN performing flight
AA-87 from London Heathrow,EN (UK) to Chicago O'Hare,IL (USA), was enroute at FL330 over the Atlantic Ocean about 470nm southwest of Keflavik (Iceland) when the crew decided to turn around and divert to Keflavik due to electrical problems. The aircraft landed on Keflavik's runway 01 about 75 minutes after turning around and was checked by emergency services before the aircraft taxied to the apron.
A passenger reported the captain indicated the backup navigation systems and public address systems had failed, the passengers noticed that the seat electronics had all failed. After landing mechanics boarded the aircraft, soon after it was announced the aircraft would not be able to continue.
A replacement Boeing 787-8 registration N808AN positioned to Keflavik arriving about 19 hours after N823AN had landed, remained on the ground in Keflavik for about 33 hours, then positioned back to Chicago.
The occurrence aircraft remained on the ground in Keflavik for 69 hours before positioning to Chicago, the aircraft is still on the ground in Chicago about 27 hours after landing in Chicago.
On Oct 25th 2022 the Canadian TSB reported the crew reported multiple electrical failures and the failure of a fuel valve. The airline dispatched maintenance to Keflavik. "A wiring check was completed with no findings. Maintenance discovered that remote power distribution units (RPDU 73 - M6 & M7) were faulty. The units drive the Primary Flight Display (PFD) and the Electronic Flight Instrument System (EFIS). Both M6 and M7 units were replaced. In addition, the secondary power distribution card DC2 was replaced. All status messages cleared, and the aircraft was returned to service."
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