When should you inform ATC of a coupled or auto-land approach?

Informing Air Traffic Control (ATC) before reaching the Final Approach Fix (FAF) is crucial for several reasons. This communication allows ATC to be aware of your aircraft’s status concerning the approach type you are executing, which is particularly important for safety and coordination with other air traffic in the vicinity.

By notifying ATC prior to the FAF, you provide necessary information that can help them manage the airspace effectively. ATC relies on this data to adjust other traffic flows and ensure that separation standards are maintained. Additionally, if there are any issues or changes during your approach, having informed ATC ahead of time facilitates a smoother and quicker response. It exemplifies good communication practices which are essential in maintaining safety during complex phases of flight such as a coupled or auto-land approach.

In contrast, informing ATC at other points—such as upon beginning descent or just before landing—might not give them adequate time to adjust their traffic management plans or could lead to situations where coordination is insufficient.