Which radio phrase indicates the aircraft is clear of conflict and resuming its assigned clearance?

• A. Clear of conflict, returning to assigned clearance
• B. TCAS RA
• C. Unable to comply, TCAS RA
• D. Clear of conflict, initial assigned clearance resumed

Answer: (A)

The main idea is that once the traffic threat is gone, you confirm you’re no longer in conflict and you’re returning to your previously assigned clearance. Saying “Clear of conflict, returning to assigned clearance” communicates two things clearly: there is no current conflict, and you will continue on the previously issued clearance (your filed route, altitude, or heading) rather than sticking with any interim maneuver. This is the standard, unambiguous way to let ATC know you’ve finished resolving the situation and are resuming normal navigation.

The other phrases aren’t as appropriate in this moment. “TCAS RA” would be used during the advisory, not to announce you're back to normal. “Unable to comply, TCAS RA” is used if you cannot follow a resolution advisory. And “initial assigned clearance resumed” uses atypical wording and doesn’t match standard phraseology.