Ramesh Vishwaskumar Bucharvada, 40, was the sole survivor of Flight AI171, which went down just 30 seconds after take-off from Ahmedabad on June 12

LONDON and DELHI -- An Air India airliner carrying 230 passengers and 12 crew members en route to the United Kingdom crashed into a building shortly after takeoff on Thursday, leaving 246 dead and at least one surviving passenger, local officials and the airline said.

A first look at footage before the fatal crash has potentially revealed why the "aircraft would not have been able to maintain flight" and "could explain why the plane came down".