What does FAF stand for in the context of an ILS approach?

In the context of an ILS (Instrument Landing System) approach, FAF stands for Final Approach Fix. This is a critical point in the approach procedure where the aircraft is established on the final approach segment of the ILS and is configured for landing. The FAF is where pilots typically begin their final descent towards the runway, and it marks the transition from the intermediate segment of the approach to the final phase of the landing.

After passing the FAF, pilots expect to see the glideslope indication, and they will execute the corresponding approach procedure. This point ensures proper vertical and lateral guidance is available as the aircraft descends toward the runway, maintaining the necessary precision for a safe landing.

The other choices, while they may sound plausible, do not align with standard aviation terminology. The term "First Approach Fix" does not specifically relate to ILS approaches, and "Flight Advisory Fix" and "Final Airway Fix" are not recognized terms within the context of ILS procedures. Therefore, recognizing the Final Approach Fix as a critical reference in the final stages of landing helps reinforce safe navigation and adherence to procedure during an ILS approach.