Boeing's troubled era has dimmed the prospects of a preeminent American manufacturer

A London-bound Air India plane carrying more than 240 people crashed shortly after takeoff Thursday. Authorities said there were no known survivors.

It was not immediately clear why Air India flight 171, a Boeing 787-8, crashed into a residential area five minutes after taking off.

Boeing said it was aware of the reports of the crash and was “working to gather more information.”