L-1011 Navigation: Marker Beacon Lights (34-13)

Marker Beacon Lights are tested by pushing each light individually. The light s are labeled and color coded for the Outer, Middle and Airways marker.

Holding the TEST switch on the associated radio head will sequentially test the marker beacon lights. AIRWAYS comes on then goes out, then MIDDLE comes on then goes out and lastly OUTER comes on then goes out. As each light ones on, it's associated identification tone is also heard.