'Emergency descent' involving Qantas A330 flight from Sydney to Perth being investigated

The crew declared an emergency just after midnight.
The crew declared an emergency just after midnight. Photo credit: Getty

The Australian Transport Safety Bureau (ATSB) is investigating an incident which resulted in a Qantas airliner making an emergency landing in Adelaide on February 5.

Flight QF583 was enroute from Sydney to Perth when a "pressurisation incident" forced the crew to land the Airbus A330 in Adelaide. 

'Emergency descent' involving Qantas A330 flight from Sydney to Perth being investigated
Photo credit: Newshub

The registration of the aircraft involved was VH-EBK, which has been in service for 12 years.

Just after midnight (local time), approximately 235 nautical miles to the south-west of Adelaide, crew conducted an emergency descent from 40,000 feet to 10,000 feet due to a depressurisation indication.

SYDNEY, AUSTRALIA - NOVEMBER 16: A Qantas Airbus A330 aircraft takes off at Sydney's Kingsford Smith Airport on November 16, 2020 in Sydney, Australia. Australia's national airline Qantas is celebrating 100 years of operation today having been founded in Winton, Queensland on 16th November 1920 named as Queensland and Northern Territory Aerial Services Limited by Paul McGinness and Hudson Fysh. (Photo by James D. Morgan/Getty Images)
Photo credit: FlightRadar24

An emergency was declared to air traffic control and the aircraft diverted to Adelaide, where it landed safely around 90 minutes later.

At 10,000 feet, air pressure is at a level where passengers would be able to breathe.

Remaining at a higher altitude during depressurisation can result in hypoxia.

The ATSB says it is currently in the "evidence collection phase" of the investigation which includes interviewing the flight crew, collecting maintenance data, and reviewing recorded flight data.