Which EICAS messages cannot be removed?

• A. Cautions
• B. Advisories
• C. Cautions and Advisories
• D. All messages can be removed

Answer: (C)

In EICAS, messages are grouped by how they're meant to be perceived and how long they stay on the display. Some alerts are designed to stay visible to ensure the crew continuously notices ongoing issues or potential problems. Cautions and Advisories fall into that persistent category, so they cannot be removed from the display simply by clearing them. They remain until the underlying condition is addressed or the system resets, ensuring you don’t lose track of ongoing status.

That’s why the best answer is that cautions and advisories cannot be removed. The idea that all messages can be removed isn’t correct, and picking only one category wouldn’t capture the fact that both of these persistent types share this behavior.