Are crewmembers authorized to use MDA as a DH during a non-precision approach given certain conditions are met?

Using Minimum Descent Altitude (MDA) as Decision Height (DH) during a non-precision approach is permissible under specific circumstances. This is because MDA is a predefined altitude for the minimum descent in such approaches, whereas DH is the altitude at which a decision must be made to continue the approach or initiate a go-around based on visual cues.

If the conditions allow for safe visual reference and the crew is trained and qualified to determine that a safe landing can be made by visually identifying the required references (like the runway environment), then using MDA as a figure to guide decisions can enhance safety. However, this practice must comply with the regulations and standards set forth for instrument flight procedures, ensuring that safety protocols are not compromised.

The other options imply limitations or conditions where using MDA as DH might not be allowed, which doesn't reflect the correct application of the rules in this context.