Sumeet Sabharwal, 56, was the captain on the flight, while Clive Kunder, 32, was the co-pilot who was flying the plane. Together, the two pilots had more than 19,000 hours of flight experience - nearly half of it on the Boeing 787. Both had passed all pre-flight health checks before the crash.

The U.S. assessment is not contained in a formal document, said a source, who emphasized the cause of the deadly crash remains under investigation.

Following the crash of flight AI-171 in Ahmedabad, Air India has inspected the fuel control switches on its entire Boeing 787 and 737 fleet. The directive for this inspection came from the aviation regulator DGCA on July 14th.