What does the term "final approach fix" (FAF) indicate?

The term "final approach fix" (FAF) specifically indicates the point at which the aircraft begins its final approach to the runway. This is a critical waypoint in the approach procedure and serves as a reference for the pilot to transition from the en-route phase to the landing phase of flight.

When an aircraft reaches the FAF, it typically has to follow specific procedures, such as configuring the aircraft for landing and ensuring that it is at the correct altitude for the approach. At this point, the approach sequence is initiated, which includes verifying that the aircraft is on the correct glide path and preparing for the landing itself. The FAF is often marked on approach charts, and it prompts pilots to focus on aligning the aircraft with the runway and managing their descent profile appropriately.