Until the recent Ahmedabad crash, the Boeing 787 Dreamliner had maintained an impressive safety record, but it has not been free from controversy.

The Aircraft Accident Investigation Bureau's preliminary report on its probe into the Air India crash on June 12, in which 260 people were killed, has stirred speculations and debates on two fronts.

Indian investigators cited a 2018 FAA advisory that had warned Boeing operators to inspect the locking mechanism of fuel ...