- i. Frangible markers placed on the sides of runway indicating the remaining runway length available in thousands of feet. These have black background with numerals painted in fluorescent orange/red color. Also called distance-to-go markers.ii. A reference marker indicating distance, particularly on a radar indicator to indicate distance of a target from the radar antenna. On a PPI (plan position indicator), it is usually one of a series of concentric circles. Also called range markers.Distance (range) markers.
Aviation dictionary. 2014.
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