Investigators Say Video Footage Overwritten of Work on Boeing Jet’s Door Plug

WASHINGTON—The head of the National Transportation Safety Board (NTSB) said on Wednesday investigators still do not know who worked on a Boeing 737 MAX 9 door plug involved in a Jan. 5 Alaska Airlines midair emergency and that video footage was overwritten. NTSB Chair Jennifer Homendy said in a letter to senators that investigators sought security camera footage when the door plug was opened and closed in September but were informed the material was overwritten. “The absence of those records will complicate the NTSB’s investigation moving forward,” Ms. Homendy said. “To date, we still do not know who performed the work to open, reinstall, and close the door plug on the accident aircraft.”...