Which marker is White and associated with CAT II DH?

• A. Inner Marker
• B. Outer Marker
• C. Middle Marker
• D. Marker beacon in general

Answer: (A)

Marker beacons on a precision approach use color to tell you where you are on the approach. The white light is the inner marker, which is placed close to the runway and is specifically associated with CAT II and CAT III approach operations. It serves as a cue that you’re in the final segment and near the decision height (or decision altitude) during those high-precision approaches. The blue light is the outer marker, which marks a point farther out on many CAT I approaches, and the amber light is the middle marker that sits between them. Because the question ties the color white to CAT II DH, the inner marker is the correct association.