It’s more than four years since MH370 disappeared off the face of the earth, and still we have no answers for the missing 239 passengers and crew who are presumed dead.

Frustration at the lack of clues has led to significant reassessment, and as Ross Coulthart discovers, there’s now growing evidence that authorities have been ignoring more credible theories about what might have brought the jet down.

Source: MH370: Special Investigation – Part one | 60 Minutes (2016) – YouTube