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- United Airlines said it has found loose bolts in its Boeing 737 Max 9 fleet.
- The loose bolts appeared to "relate to installation issues in the door plug."
- On Friday, a Boeing 737 Max 9 operated by Alaska Airlines lost its door plug mid-flight.
United Airlines announced Monday it found loose bolts during inspections of its Boeing 737 Max 9 fleet following Friday's Alaska Airlines incident in which a door plug blew out mid-flight.