FAA urges door plug checks on second Boeing model ‘as soon as possible’
Washington Post
The FAA urged airlines to check Boeing’s 737-900ER as “an added layer of safety” since it has the same door plugs as the 737 Max 9, which blew out midflight.
https://www.washingtonpost.com/transportation/2024/01/22/faa-boeing-737-safety-door-plug/