It could take up to 48 hours to confirm that debris spotted by satellite 2,500km southwest of Perth belongs to the missing Malaysia Airlines flight MH370, an expert said.
Michael Daniel, a retired United States Federal Aviation Administration official told The Straits Times: "If they have a strong feeling or indication that the debris belongs to the aircraft, one of the first things authorities will do is drop sonar buoys in the water.
"If the black box is there, the buoys should be able to pick up the signals. This could take up to 48 hours but it all depends on how near or far the ships and other assets are."
The Straits Times