Serious incident to the Airbus A330 registered VH-EBK operated by Qantas on 05/02/2021 at Adelaide

Preliminary data based on the notification from the Australian authorities:

During cruise, the crew detected a pressurisation system fault and conducted an emergency descent to 10,000 ft. The crew lost communications with ATC and diverted the aircraft to Adelaide.

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Défaut du système de pressurisation, descente d'urgence, perte des communications avec le contrôle, déroutement

General information
Local date	05/02/2021
Responsible entity	Australia - ATSB
Scope of Investigation	Full (Annex 13) type investigation
State or area of occurrence	Oceania - Australia
Location	AD Adelaide
Human consequences	None
Aircraft consequences	None
Occurrence class	Serious incident
File number	BEA2021-0051

Flight Information
Aircraft category	Fixed Wing - Aeroplane - Large Aeroplane - Large Aeroplane
Operator	Australia - Qantas Airways Limited
Manufacturer / Model	AIRBUS - A330
Aircraft Registration	VH-EBK
State of registry	Australia
Last departure point	Australia - YSSY (SYD): Sydney / Kingsford Smith International
Planned destination	Australia - YPPH (PER): Perth Intl
Flight phase	En route
Serial number	0945
Operator Type AG
Operation Type	Commercial Air Transport - Passenger - Airline

BEA is the French air safety investigation authority for civil aviation. The sole objective of the investigation is to improve air safety. It is intended neither to apportion blame nor to assess responsiblity.