What does the command "Exit blocked" indicate?

The command "Exit blocked" is used in emergencies to communicate that a specific exit route is not accessible. This command typically indicates that crew members should direct passengers to use alternative ways to evacuate the aircraft. Therefore, it provides specific guidance to go forward, back, or across to find an alternate exit that is not compromised.

This is crucial in emergency situations where time and safety are of the essence, and it ensures an orderly and efficient evacuation process. Understanding this command can help passengers remain calm and follow instructions promptly, which is vital for their safety.

In contrast, the other options do not accurately reflect the meaning conveyed by the command. For instance, stating that all exits are clear would be misleading and could endanger lives. Similarly, the command does not directly prepare passengers for an emergency landing nor suggest they remain seated, as these responses do not address the immediate need for reassessing evacuation routes.