Decision altitude or decision height
urn:aero:airm:1.0.0:ContextualModel:ATMBusinessTerms:Decision_altitude_or_decision_height_
A specified altitude or height in a 3D instrument approach operation at which a missed approach must be initiated if the required visual reference to continue the approach has not been established.
Source:
ICAO
Synonyms:
decision altitude/height; DA/H
Abbreviations:
DA;DH