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WASHINGTON (Reuters) - The head of National Transportation Safety Board said Wednesday investigators still do not know who worked on a Boeing 737 MAX 9 door plug involved in a Jan. 5 Alaska Airlines mid-air emergency and that video footage was overwritten.
NTSB Chair Jennifer Homendy said in a letter to lawmakers investigators sought security camera footage from the work performed in September but were informed the material was overwritten. "The absence of those records will complicate the NTSB’s investigation moving forward," Homendy said. The NTSB said previously said four key bolts were missing from the door plug that blew out on the plane.
(Reporting by David Shepardson)
