What does Localizer provide?

What does Localizer provide?

• A. Provides vertical guidance for the ILS
• B. Provides horizontal guidance for the ILS
• C. Provides bearing information to the runway
• D. Provides local course alignment for the ILS

Answer: (B)

The Localizer provides horizontal (lateral) guidance to align the aircraft with the runway centerline. It transmits a signal that represents the intended approach course along the runway, and deviations to the left or right tell you how to steer to stay on that centerline. Vertical guidance comes from the Glideslope, not the Localizer, so it doesn’t tell you about up-and-down motion. Bearing information to the runway isn’t what the Localizer delivers—the signal is about following the runway’s centerline from the side-to-side perspective, not providing a fixed bearing to the runway. The term that best describes what the Localizer does is horizontal guidance for the ILS.

The Localizer provides horizontal (lateral) guidance to align the aircraft with the runway centerline. It transmits a signal that represents the intended approach course along the runway, and deviations to the left or right tell you how to steer to stay on that centerline. Vertical guidance comes from the Glideslope, not the Localizer, so it doesn’t tell you about up-and-down motion. Bearing information to the runway isn’t what the Localizer delivers—the signal is about following the runway’s centerline from the side-to-side perspective, not providing a fixed bearing to the runway. The term that best describes what the Localizer does is horizontal guidance for the ILS.