What is the 4th threat level?

• A. Disruptive
• B. Physical abuse
• C. Weapon-life threatening
• D. Attempted to breach the flight deck

Answer: (D)

Threat levels rise with the immediacy and potential damage of the action. The fourth level specifically covers actions that show an imminent threat to cockpit security—an attempted breach of the flight deck. This is extremely serious because it directly endangers the control of the aircraft and the safety of everyone on board, and it typically prompts the crew to take rapid, high-priority protective actions while summoning assistance if available.

Disruptive behavior and physical abuse are serious but don’t by themselves indicate an imminent attempt to access the flight deck. A weapon-related or life-threatening situation is even more severe, involving actual weapon use or an immediate threat of fatal harm. Placing an attempted breach of the flight deck at the fourth level reflects its status as a highly dangerous, cockpit-targeted threat that requires swift, decisive response before anything else escalates.