Flight 305 Lockdown Proves Post-9/11 Door Works; Security Gap Persists

Alaska Airlines Flight 305 triggered the U.S. post-9/11 cockpit lockdown sequence after passengers threatened to seize control while the Boeing 737-800 was at Miami International Airport. The aircraft was towed back to its gate on Sunday evening and the flight deck was sealed, with the engines shuttered and air traffic control notified. The incident occurred as the plane began taxi on August 9, 2026, before it moved 50 feet. Under 14 CFR § 25.795, U.S. passenger aircraft must have a hardened flight crew compartment door designed to resist penetration by small arms, and the cockpit door can be overridden from inside once sealed. Communication with cabin staff goes through the interphone only. The article says the system can keep cabin events from reaching the controls, but also highlights that a secondary barrier for the broader fleet remains uncertified.