The phrase '(ACFT-ID) POSSIBLE PILOT DEVIATION. ADVISE YOU CONTACT (facility) AT (telephone number)' indicates what?

• A. A routine radio check
• B. A pilot deviation
• C. An emergency procedure
• D. A request for radar vector

Answer: (B)

This phrase is signaling that there may have been a deviation from a clearance or standard procedure, and you’re being told to contact the controlling facility to talk it over. The key part is “POSSIBLE PILOT DEVIATION,” which shows ATC suspects you’re not operating exactly as cleared, and the directive to contact the facility provides a direct way to verify the situation and fix it. It’s not a routine radio check, which would be a straightforward request about communications quality; it’s not an emergency, which would use distress phrases or explicit emergency language; and it isn’t simply a request for radar vectors, which would involve terms about guidance or instruction to vector your flight. The instruction to call the facility is a safety step to discuss what happened and decide on the next compliant actions.