What must cabin crew do if an exit becomes unusable?

The appropriate action for cabin crew when an exit becomes unusable is to assess the situation rather than simply shouting the problem or remaining silent. Taking a moment to evaluate the situation allows the crew to determine the best course of action to ensure the safety of everyone on board.

While making noise to draw attention could be seen in some contexts as necessary, it can also lead to confusion or panic among passengers, which the crew must strive to avoid. Remaining entirely silent is typically not advisable either, as that can prevent effective communication and timely evacuation of passengers if needed.

By taking time to assess the situation, cabin crew can identify whether the exit can be safely used, if an alternative exit needs to be prepared, and can calmly relay accurate and important information to passengers. This measured approach is crucial for maintaining order and safety during an emergency.