White indicators on cockpit displays signify what status on the EHSI?

• A. Armed
• B. Unarmed
• C. Active
• D. Standby

Answer: (A)

White indicators on the EHSI show that a navigation mode is armed—it's been selected and will engage automatically when the triggering conditions are met. It isn’t actively guiding you yet, but it’s prepared to take over once the system captures the needed signal or conditions (for example, when intercepting a localizer/glideslope or a planned leg). Once the mode becomes active, the indicator color typically changes to reflect that current guidance is being provided.