Which button overrides all other communication on the aircraft when pressed and should be used only for critical information?

• A. Call button
• B. Push-to-talk
• C. Emergency button
• D. Override button

Answer: (A)

The situation tests how you get urgent information across the crew quickly by interrupting normal chatter. The call button is designed to grab attention and route a message to the designated crew members, effectively overriding ongoing communications so the critical information isn’t missed. It acts like a wake‑up alert to the people who need to hear it, which is exactly what you want for information that cannot wait.

Push-to-talk is for regular voice transmission on a specific channel and won’t override current dialogue. The emergency button triggers predefined emergency procedures and alerts, but isn’t used for a general crew-wide override of all traffic. The override button is typically for system or control overrides rather than delivering a broad, urgent crew alert.