Final answer:
A pilot can descend out of the DH (Decision Height) during a precision approach if, and only if, they have the runway environment in sight with the required visual references to safely continue the approach and execute a landing.
Step-by-step explanation:
When asked, 'When can you descend out of the DH?' it is important to note that 'DH' stands for Decision Height, which is a term used in aviation. The Decision Height is the specified altitude in a precision approach at which a pilot must have the runway environment in sight in order to continue the approach to a landing. If the pilot does not have the necessary visual reference, they must execute a missed approach.
Therefore, a pilot can descend out of the DH only if the required visual references to land are clearly visible and identifiable. If the visibility is poor, or if the pilot cannot make out the landing runway, the lights, or other visual cues required for a safe landing, the decision to continue descending below the DH is not permitted, and a go-around or missed approach procedure must be initiated.