"Loose Bolts Found on United's 737 Max 9 Planes After Alaska Airlines Door Plug Incident"

United Airlines found loose bolts during inspections of its 737 Max 9 fleet following the Alaska Airlines incident where a door plug blew out mid-flight. The FAA grounded all 737 Max 9s, and United had to cancel 200 flights for emergency inspections. NTSB investigators recovered the door plug and are examining it as the key piece of evidence.