You can see from the debris whether the engines were producing power at impact—turbines break apart differently when they’re traveling very high,” said Peter Goelz, former managing director of the US National Transportation Safety Board.

With 260 casualties and only one surviving passenger, the Air India 171 crash is one of the deadliest aviation incidents in recent history — and so far it’s proving to be one of the most frustratingly opaque.

International airlines from South Korea and India are preparing to inspect its Boeing fleets following findings from the Air India crash investigation.

Air India plane crash investigators have found both of the Boeing 787's "black boxes," hopefully brining an understanding of the cause of the disaster a step closer.