Which UFCP button transmits a specific pulse to aid in immediate identification on a controller's scope?

• A. DIR
• B. ID
• C. MRK
• D. EXEC

Answer: (B)

Identifying your aircraft to the controller’s radar scope is done with the ident function. Pressing the identification button causes the transponder to emit a distinctive pulse that momentarily highlights your blip on the controller’s display, making it immediately clear which aircraft you are. This specific pulse is built for quick recognition in busy airspace, which is why it’s relied on for immediate identification. The other UFCP functions serve different tasks—setting a direct-to route, interacting with marker beacon information, or executing entered data—so they don’t provide the instant identification the controller needs.