Autopilot minimum for non-precision approaches is defined as which term?

Autopilot minimum for non-precision approaches is defined as which term?

• A. MDA
• B. DA
• C. DDA/DA
• D. DDA

Answer: (C)

Autopilot minimums on non-precision approaches are expressed as a Decision Altitude or Decision Height, depending on the system and how vertical guidance is presented. Because some avionics define the minimum at which the autopilot can continue with a vertical reference as a DA, while others use a DDA for approaches without an explicit vertical path, the standard way to cover both scenarios is to use DDA/DA. This reflects that, in practice, the autopilot minimum could be either a height/altitude at which you must decide to continue visually (DDA) or a decision altitude/height when vertical guidance is available (DA). That’s why DDA/DA is the most accurate phrase for autopilot minimums on non-precision approaches.

Autopilot minimums on non-precision approaches are expressed as a Decision Altitude or Decision Height, depending on the system and how vertical guidance is presented. Because some avionics define the minimum at which the autopilot can continue with a vertical reference as a DA, while others use a DDA for approaches without an explicit vertical path, the standard way to cover both scenarios is to use DDA/DA. This reflects that, in practice, the autopilot minimum could be either a height/altitude at which you must decide to continue visually (DDA) or a decision altitude/height when vertical guidance is available (DA). That’s why DDA/DA is the most accurate phrase for autopilot minimums on non-precision approaches.