Three unions representing aviation safety inspectors said in a sharply worded report months before the Boeing Co.’s 737 Max was approved for use that the planemaker was given too much authority to oversee itself and that the new jet had safety flaws.
The new version of the decades-old 737 was approved with a vulnerable flight-control system and flaws in its fuel tank because Boeing and Federal Aviation Administration management overruled front-line workers, the report charged.
