DH

DH or Decision Height refers to the altitude at which pilots need to make a decision on whether to continue the landing approach or to abort it due to limited visibility or other unsafe conditions. This critical altitude is set by regulatory authorities and varies depending on the type of aircraft, airport, and prevailing weather conditions. The decision to continue or abort a landing at DH is based on visual cues such as runway markings, lights, and approach slope indicators, as well as instruments such as altimeters and radio altimeters. The DH concept plays a vital role in ensuring the safety of air travel by enabling pilots to make informed decisions in challenging circumstances.