Investigators in India are studying the black boxes of a Boeing 787 Dreamliner after recovering them from the aircraft wreckage to ascertain the cause of last week’s plane crash that left at least 270 people dead.

A 1944 global aviation pact, and the principle of shared air safety, explains the foreign presence at the AI 171 crash site

LR, landed in Kolkata from San Francisco. During the layover, a technical issue was identified in the left engine. According to reports, the pilot instructed all passengers to deplane at around 5.20 am.