If there is a threat of an explosive device, which checklist should be followed?

• A. PAN/MAYDAY
• B. Evacuate
• C. BOMB ON BOARD and activate SAAP
• D. Ignore

Answer: (C)

When there is a threat of an explosive device, the Bomb On Board checklist is the appropriate protocol because it provides a security-focused, coordinated response rather than a general distress signal. This checklist guides crew to secure the area, limit movement, protect passengers, and maintain situational awareness while preparing to coordinate with the cockpit and authorities on the ground. Activating SAAP ensures a structured action plan that aligns actions with security authorities, preserves evidence, and supports a safe sequence for potential diversion or landing. A generic distress call, while important for getting immediate help, does not implement the specific security steps needed in a bomb threat or coordinate with the appropriate agencies. Evacuation may be necessary in some cases, but it is not automatic and depends on risk assessment and official guidance. Ignoring the threat is not an option.