Boeing is withholding key details about door plug on Alaska 737 Max 9 jet, NTSB says

A unfinished Boeing 737 Max sits outside Boeing's manufacturing facility in Renton, Wash., on Feb. 27, 2024. The top federal safety investigator says Boeing still has not provided key information that could shed light on what went wrong when a door plug blew off an in-flight 737 Max 9 in January. (Jovelle Tamayo for NPR)

WASHINGTON — More than two months after a door plug panel blew off a Boeing 737 Max 9 jet in midair, the top federal safety investigator says Boeing still has not provided key information that could shed light on what went wrong.

National Transportation Safety Board chair Jennifer Homendy told the Senate Commerce Committee on Wednesday that Boeing has not revealed who was responsible for failing to reattach the door plug properly at the company's factory near Seattle.