All but one of the 242 people on board the London-bound flight died when it crashed into a residential area in Ahmedabad shortly after take-off.

Dozens of anxious family members sat outside an Indian hospital waiting to collect bodies of loved ones killed in Thursday's Air India plane crash, as doctors worked overnight to gather dental samples from the deceased and run identification checks.

The Boeing 787 Dreamliner, packed with 242 people on board, barely cleared the rooftops of the residential neighborhood just beyond the runway in the crowded Indian metropolis of Ahmedabad.