Four bolts appeared to be missing from Boeing panel that blew off, regulator says

Boeing says we simply must do better' after US transportation safety board releases report on Alaska Airlines 737 Max 9 incident

A cabin panel that blew off a brand-new Boeing 737 Max 9 jet mid-flight appeared to be missing four key bolts, according to an initial report by the US safety regulator.

The bolts meant to hold the door plug in place were absent, the National Transportation Safety Board (NTSB) said. It released photographic evidence alongside the preliminary findings of its investigation on Tuesday.