What does the published localizer course symbol at Jefferson County Airport indicate?

What does the published localizer course symbol at Jefferson County Airport indicate?

• A. A published LDA localizer course.
• B. A published SDF localizer course.
• C. A published VOR approach with glideslope.
• D. A published ILS localizer course, which has an additional navigation function.

Answer: (D)

The symbol means there is a published ILS localizer course for that runway. It identifies the facility as an ILS/LOC-type navigation aid, not an LDA or SDF. In addition to guiding you on an ILS approach, the localizer signal provides lateral navigation information that can be used as a nav aid along the published course in appropriate reception, giving you directional guidance even outside of the ILS procedure. So you’re seeing that the runway has an ILS localizer, with the added note that the localizer can serve a navigation function beyond just supporting the approach.

The symbol means there is a published ILS localizer course for that runway. It identifies the facility as an ILS/LOC-type navigation aid, not an LDA or SDF. In addition to guiding you on an ILS approach, the localizer signal provides lateral navigation information that can be used as a nav aid along the published course in appropriate reception, giving you directional guidance even outside of the ILS procedure. So you’re seeing that the runway has an ILS localizer, with the added note that the localizer can serve a navigation function beyond just supporting the approach.