What action is not part of the in-flight bomb procedure?

The action of disembarking all passengers immediately is not part of the in-flight bomb procedure. In the context of an in-flight bomb threat or potential explosive device situation, the primary concern is to maintain control of the aircraft and ensure the safety of everyone on board while minimizing panic and disruption.

During such a critical scenario, the crew must follow established protocols that emphasize communication, coordination, and strategic responses. Briefing all crew on necessary information such as NITS (Nature of the threat, Intent of the threat, Time, and Special Instructions) is vital for cohesive action. Likewise, making an announcement to passengers serves to inform them without causing undue alarm and helps maintain calm.

Awaiting further instructions from appropriate authorities is essential, as it allows the crew to act based on the best available information and guidance from specialists trained to handle bomb threats. Disembarking passengers immediately could escalate the situation, potentially putting everyone at greater risk and complicating the response to the threat. Thus, maintaining the status quo onboard while following specific procedures is crucial for safety during such incidents.