Question

How do you set the DH with multiple RAs listed?

A. Set the DH to the lowest published RA, but no lower than 100 ft HAT.
B. Set the DH to the average of the published RAs.
C. Set the DH to the highest published RA.
D. Set the DH to 100 ft HAT, regardless of the published RAs.

Answer 1

The correct procedure for setting the Decision Height with multiple RVRs listed is to set the DH to the lowest published RA, with the limit being no lower than 100 feet HAT.

Step-by-step explanation:

The question pertains to setting the Decision Height (DH) in aviation, particularly when dealing with multiple published RVRs (Runway Visual Ranges). DH is a specified altitude or height 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. When you have multiple RAs (Radio Altimeters) or RVRs listed, the correct procedure is to set the DH to the lowest published RA, but it should not be lower than 100 feet Height Above Touchdown (HAT). This ensures that the pilot has the maximum allowable visibility to make a safe landing decision without descending dangerously low during poor visibility conditions.