APREQ is defined as...

• A. A request for approval of a control action that will affect the receiving controller(s).
• B. A request to cancel an altitude.
• C. A routine weather update.
• D. A LOA amendment.

Answer: (A)

APREQ is about getting permission before taking a control action that will impact other controllers. It serves as a formal coordination step to ensure the receiving controller(s) are informed, prepared, and able to handle the change without surprises or conflicts. When a proposed action could alter how traffic is handed off, routed, or managed across facilities or sectors, submitting an APREQ ensures the action is reviewed and approved by the appropriate authority before it goes into effect.

The other options describe different kinds of communication or actions: canceling an altitude is a clearance rather than a coordination request, a routine weather update is informational, and a LOA amendment involves a change to an interfacility agreement rather than an immediate control action requiring approval.