Last year, the F.A.A. said it was also investigating claims by a Boeing engineer that parts of the fuselage, or body, of the Dreamliner were improperly fastened together, which the whistle-blower said could cause premature damage to the plane over years of use.

Britain's King Charles and other senior royals wore black armbands at the "Trooping the Colour" military parade on Saturday (June 14) as a mark of respect for the victims of the Air India plane crash.

Investigators hope the device will provide clues about the cause of the accident that killed 241 passengers and crew, and a number of others on the ground.

The crash happened just weeks after the company cut a deal with the U.S. government to avoid taking criminal responsibility for a pair of deadly crashes in 2018 and 2019.