What procedure should be followed when adjusting to a new heading dictated by ATC in controlled airspace?

When ATC provides a new heading in controlled airspace, the flight crew should report the change to ATC as soon as practical. This practice is important for several reasons. First, it ensures that ATC has confirmation that the pilot has received and acknowledged the instruction, which helps maintain situational awareness for both the controller and the pilot.

Moreover, timely reporting allows ATC to monitor flight progress and adjust separation between aircraft as needed. This is critical in busy airspace where multiple aircraft may be operating in close proximity. By promptly communicating the execution of the heading change, pilots contribute to a safe and effective air traffic management process.

Additionally, reporting the change helps in maintaining open lines of communication, which is essential for operational safety. It also allows for any potential miscommunication to be quickly addressed, ensuring compliance with ATC instructions and facilitating smooth operations within the airspace.