After coordination completion, what must the student inform the Radar Controller?

• A. Only that coordination is complete.
• B. The Radar Controller should be informed at the end of the shift.
• C. The call sign and altitude limits of their coordination.
• D. The aircraft type and speed.

Answer: (C)

The key idea is that after finishing coordination you must pass to the radar controller the aircraft’s call sign and the altitude limits that apply to that coordination. The call sign uniquely identifies which flight is being coordinated, so the controller can track the correct aircraft on the radar. The altitude limits define the vertical boundaries of the coordination, telling the controller within what flight levels the aircraft is allowed to operate and helping to maintain safe separation with other traffic.

Saying only that coordination is complete doesn’t give the controller a way to identify the flight or its vertical constraints, so they wouldn’t know which aircraft to monitor or what altitude band to enforce. Waiting until the end of the shift isn’t relevant to the handoff of the specific coordination, and providing aircraft type and speed, while useful in some contexts, does not communicate the essential vertical constraint that the coordination establishes.