Retired US Air Force Lt. Col. Ken Christensen says the possible wreckage of MH370 can definitely be recovered if it is located off the coast of Australia. Courtesy Fox News

THE pilot of missing Malaysia Airlines flight MH370 made a mystery call just minutes before takeoff in Kuala Lumpur.

A report in The Sun said investigators are trying to work out who Captain Zaharie Ahmad Shah spoke to in the cockpit before taking off for Beijing.

It is hoped the person on the other end of the call will provide a key clue to understanding the mystery of the missing flight.

Malaysian authorities have not commented on the lead or confirmed a phone call took place.

This information comes off the back of a revelation files had been deleted on February 3 from Capt Shah’s home flight simulator, just over a month before MH370 vanished. Malaysia’s defence minister said they are working to restore the files to see if it can shed any light on what may have happened on the aircraft.

MH370 disappeared with 239 people on-board on March 8.

The report comes as Australian authorities head to an area of the southern Indian Ocean off Western Australia where debris has been spotted by satellite.

The objects captured four days ago in one of the most isolated places in the world include one piece measuring 24 metres long and another about five metres in length.

Four aircraft are searching a 23,000 square kilometre area, which has been deemed the “best lead yet”.