Reference datum height

In aviation, reference datum height (RDH) is the height of a point, located above the intersection of the runway centre line and the threshold, through which the downward extended straight portion of the glide path passes. It is usually found on the aerodrome instrument approach charts.

Reference datum height

In aviation, reference datum height (RDH) is the height of a point, located above the intersection of the runway centre line and the threshold, through which the downward extended straight portion of the glide path passes. It is usually found on the aerodrome instrument approach charts.