Accusations of a cover-up and lack of transparency have dogged the two-year search for MH370.

Skywest ordered 100 MRJ90s in 2012, but doubts have persisted about whether scope clause agreements can be adjusted to accept the aircraft.

With more than 90 per cent of the search area for MH370 now covered, the company leading recovery efforts has conceded it may have been looking in the wrong place all along.