In an ILS approach, the Outer Marker is typically located where?

• A. A marker beacon located at the runway threshold.
• B. A beacon near the VOR.
• C. A marker beacon at or near the glideslope intercept altitude of an ILS approach; normally located four to seven miles from the runway threshold on the extended centerline of the runway.
• D. A beacon at the missed approach point.

Answer: (C)

An outer marker marks a fixed point on the ILS approach path. It sits on the extended centerline about four to seven miles from the runway threshold and near the altitude where you intercept the glideslope. This placement gives you a clear cue that you’re at the proper distance to begin or confirm descent on the glide path, helping you stay properly aligned with the runway. It isn’t located at the runway threshold, isn’t placed near a VOR, and isn’t at the missed approach point, which is why the outer marker’s position is specific to that early segment of the approach.