A crash in India renewed concerns about Boeing’s 787 Dreamliner, the jet maker’s smaller widebody plane. While the 787 has never before been involved in

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.

John Barnett was a former quality manager who flagged safety lapses in the Boeing Dreamliner programme before his mysterious death last year.