required visual reference

required visual reference

With respect to an aircraft on an approach to a runway, the section of the approach area of the runway or the visual aids that enable the pilot to make an assessment of the aircraft position and the rate of change of position relative to the nominal flight path to determine if the approach can safely continue to complete the landing.
References in periodicals archive ?
Decision Altitude/Height (DA/H): A specified altitude or height (A/H) in the precision approach at which a missed approach must be initiated if the required visual reference to continue the approach has not been established.
The MDA is the altitude below which the aircraft must not descend unless the required visual reference to continue the approach has been established.
175 says you can't de- scend below MDA without the required visibility (not an issue in this case), one of the required visual references (also not an issue with the runway in sight), and unless you can land with normal maneuvers (not an issue if the pilot can descend for landing before PATER).