What will you hear when the ATT button is pushed?

When the ATT button is pushed, the expected response is to hear one HI/LO chime. This chime serves as an alert for the crew regarding the activation of the system, but it does not indicate a malfunction or an emergency. The single HI/LO chime is designed to be a non-intrusive notification, allowing the crew to acknowledge that a certain operation or alert condition has been activated without presenting excessive alarm or urgency.

This system of alerts is crucial in aviation as it helps maintain situational awareness and ensures that the crew can differentiate between routine notifications and critical alerts that require immediate attention. In this context, the other options do not accurately describe the typical auditory feedback associated with the ATT button, reinforcing why the expected response is a single HI/LO chime.