For position verifications, what is the only appropriate response, assuming the position is verified?

• A. Radar contact
• B. (ACID) Radar contact
• C. ACID, position verified
• D. Position confirmed

Answer: (B)

Verifying a position on radar uses a specific standard phraseology to show positive identification and radar contact. Saying (ACID) Radar contact communicates that you have identified the aircraft on radar and have the four ACID elements—Altitude, Course, Identification, and Distance—plausibly verifying its position. This makes the identification explicit and unambiguous for both sides.

Simply saying Radar contact would indicate you have radar contact but not that the target has been positively identified with the ACID data set. Phrases like ACID, position verified or Position confirmed aren’t the standard form used to convey that identification and radar contact have been established, so they don’t communicate the same confirmed identification.