APREQs must be performed to which sector using which identifier?

• A. APREQs may be sent to any sector, regardless of ACID.
• B. APREQs must be performed to the correct sector using the correct ACID.
• C. APREQs are optional if already coordinated.
• D. APREQs are mandatory only for altitude changes.

Answer: (B)

APREQs must be directed to the correct sector and carry the correct Aircraft Identification Code (ACID). This pairing ensures the request is processed by the appropriate controller and linked to the right aircraft record, so coordination, sequencing, and handoffs happen accurately. Sending the APREQ to the wrong sector can leave the request unseen or mishandled, and using an incorrect ACID breaks the link to the correct aircraft, risking misidentification and unsafe separation. APREQs are not optional once coordination is involved, and they aren’t limited to altitude changes—their role is to ensure proper sector coordination for the intended aircraft with the right identifier.