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G-ONEE: electrical failures and unreliable airspeed

Printed page label not indexed. PDF page 1.

Manufacture: 1991 (Serial no: 24998) Date & Time (UTC): 8 February 2024 at 0813 hrs Location: After departure from London Heathrow Airport Type of Flight: Commercial Air Transport (Cargo) Persons on Board: Crew - 5 Passengers - None Injuries: Crew
Open official document at PDF page 1AAIB final report: G-ONEE

G-ONEE: electrical failures and unreliable airspeed

Printed page label not indexed. PDF page 38.

attempted. Cockpit voice recorder (CVR) The CVR ceased recording approximately 19 minutes after departure following the loss of both power supplies. The absence of CVR recordings for the subsequent period limited the investigation's ability to establish an objective sequence
Open official document at PDF page 38AAIB final report: G-ONEE

G-ONEE: electrical failures and unreliable airspeed

Printed page label not indexed. PDF page 2.

followed the departure profile using HDG SEL and FLCH4 AFDS modes and carried out the after-takeoff checklist. After the crew analysed the substantial number of EICAS messages5, they performed the Quick Reference Handbook (QRH) procedure for elec ac bus 46.
Open official document at PDF page 2AAIB final report: G-ONEE

G-ONEE: electrical failures and unreliable airspeed

Printed page label not indexed. PDF page 36.

E1 and E2 racks on Boeing 747-8 aircraft Second electrical failure incident on G-ONEE After this report was drafted another electrical failure incident occurred on G-ONEE during departure from Ezhou Huahu International Airport in China on 22 May 2026. During
Open official document at PDF page 36AAIB final report: G-ONEE

G-ONEE: electrical failures and unreliable airspeed

Printed page label not indexed. PDF page 42.

electrical system failures that were caused by a loss of AC Bus 4, followed shortly thereafter by a loss of AC Bus 1. The loss of power was the result of water ingress into GCUs 1 and 4 which led
Open official document at PDF page 42AAIB final report: G-ONEE

G-ONEE: electrical failures and unreliable airspeed

Printed page 31. PDF page 33.

balance corresponding to the aeroplane's takeoff weight and shown on the final load sheet (after LMC) was 23.3% of the MAC (mean aerodynamic chord), which was within the limits. The recorded data indicates that at the time of the event,
Open official document at PDF page 33Final Report: Accident on 1st June 2009 to the Airbus A330-203 registered F-GZCP operated by Air France flight AF 447