A Qantas flight from Adelaide to Canberra has been diverted to Melbourne after a cabin pressurisation issue.
A statement from the airline says pilots on flight QF706 followed standard procedure when the incident occurred on Tuesday morning, descending to 10,000 feet.
Facebook user Jeffrey Malone said he was aboard the flight and the cabin staff did a great job at "keeping the passengers calm and informed of what was happening".
"The aircraft shuddered a bit, there was a bit of a ‘bang’ sound (seemed to come from front right of cabin), then the masks dropped and the alert messages played," he said.
"Aircraft then descended to 10000 ft, diverted to Melbourne, and landed with no issues."
A spokesperson from Qantas said the aircraft was given a priority landing at Melbourne Airport and "landed without incident. It was not an emergency landing".
Oxygen masks were deployed but once the plane reached the lower altitude passengers were instructed to remove them and breathe normally.
One passenger told ABC that she heard a "loud bang" and said that passengers "had to don the oxygen masks and keep them on."
Twitter user Greg Denehy wrote "QF706 to Canberra this morning lost cabin pressure so we put the oxygen masks to good use while diverting to Melbourne."
"Kudos to the professionalism of the crew with the safety and wellbeing of passengers clearly the priority. Not how I expect my morning to go though," he tweeted.
A Qantas statement said that all customers left the aircraft normally and will be transferred onto other flights.
Qantas Chief Technical Pilot Captain Alex Passerini said "our pilots and cabin crew handled the incident in line with standard operating procedures."
"We would like to thank our customers who followed the crew instructions and remained calm during the diversion," Mr Passerini said.
"The aircraft is currently being examined by engineers in Melbourne to determine the fault."
