The family of a British man feared to have been on board the Air India flight that crashed in India say they are desperate for answers about what happened to him. Faizan Rafik was returning home to Leicester when the plane he was due to be travelling on crashed into a residential area in Ahmedabad on Thursday.

Investigators in India are studying the black boxes of a Boeing 787 Dreamliner after recovering them from the aircraft wreckage to ascertain the cause of last week’s plane crash that left at least 270 people dead.

Since the Tata takeover, India’s Directorate General of Civil Aviation has repeatedly fined Air India over safety and other regulatory violations, including an Rs8mn ($95,000) penalty last year for exceeding flight duty time limits. At home, it is competing in a near-duopoly with IndiGo, which has been boosting its international long-haul routes.