There have been cases of a very small number of survivors in very serious accidents, but it is "very rare" for there to be only one, a professor told Newsweek.

NEW DELHI (Reuters) -The head of Boeing Commercial Airplanes, Stephanie Pope, met the chairman of Air India on Monday in India, two sources said, as the companies seek to find the cause of last week's fatal crash involving a Boeing 787 Dreamliner.

Doctors in India say 270 bodies have been recovered from the site of Thursday's plane crash in Ahmedabad. The London-bound aircraft crashed into a residential area shortly after take-off killing all but one of the 242 passengers and crew members, a 40-year-old British man.