An investigation into flight MH370's disappearance one year ago hasn't found any red flags related to the crew or mechanical issues.
The interim report sheds little new light on the mystery.
But it HAS revealed the battery allowing one of the plane's black boxes to send 'pings' ran out more than a year before the flight vanished.
Australian Prime Minister Tony Abbott says he's 'reasonably confident' search teams in the Indian Ocean will find the jet.
