Which color marker beacon light indicates the middle marker?

Which color marker beacon light indicates the middle marker?

• A. Blue
• B. Amber
• C. White
• D. Violet

Answer: (B)

Marker beacons along an ILS use distinct colors to tell you exactly where you are on the approach. The light that corresponds to the middle marker is amber. This marker sits roughly halfway along the final approach, signaling a checkpoint before the final descent toward the runway. The other colors have their own markers: blue indicates the outer marker, white signals the inner marker. Some systems also use violet for a back course marker, which is a different setup than the standard three-marker sequence. So, seeing amber means you’re crossing the middle marker.

Marker beacons along an ILS use distinct colors to tell you exactly where you are on the approach. The light that corresponds to the middle marker is amber. This marker sits roughly halfway along the final approach, signaling a checkpoint before the final descent toward the runway.

The other colors have their own markers: blue indicates the outer marker, white signals the inner marker. Some systems also use violet for a back course marker, which is a different setup than the standard three-marker sequence. So, seeing amber means you’re crossing the middle marker.