Investigators, led by India’s Aircraft Accident Investigation Bureau with the assistance of the NTSB, have been piecing together evidence to determine what caused Air India Flight 171 to crash on June 12,

The United States National Transportation Safety Board Chair Jennifer Homendy said on Friday that recent media reports on the crash of an Air India Boeing Dreamliner that killed 260 people were premature and speculative.

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.