The ill-fated Air India Boeing may have had its emergency power systems activated when it crashed and killed more than 270 people last week — according to a new report that comes as the bruised-and-battered sole survivor helped carry his brother’s coffin after his sibling died in the tragedy.

An Air India flight bound for London crashed shortly after take-off from the Sardar Vallabhbhai Patel International Airport in Ahmedabad on Thursday afternoon. The aircraft, a Boeing 787-8 Dreamliner operating as Air India 171, was carrying 242 people, including 230 passengers and 12 crew members.

A British Airways flight to Chennai, India, entered a series of holding patterns to dump fuel before returning to London's Heathrow Airport.