Min AP use height is defined as what?

Min AP use height is defined as what?

• A. 20 ft
• B. 50 ft
• C. 100 ft
• D. 150 ft

Answer: (B)

The idea being tested is how low you’re allowed to let the autopilot fly during an instrument approach. This limit—often given as a minimum autopilot use height—tells you the lowest height above the terrain (radio altitude) at which the autopilot may remain engaged. For the ERJ 175, the defined minimum autopilot use height is 50 feet. That means you can keep the autopilot engaged down to 50 ft above the ground on an approach, giving you enough time to monitor the flight path, verify configuration, and be prepared to manually land or transition to a safe manual flare if needed. Going lower than 50 ft RA isn’t permitted by the limit, and values like 20 ft would leave too little margin to intervene, while 100 or 150 ft would exceed the minimum and unnecessarily constrain the pilot.

The idea being tested is how low you’re allowed to let the autopilot fly during an instrument approach. This limit—often given as a minimum autopilot use height—tells you the lowest height above the terrain (radio altitude) at which the autopilot may remain engaged.

For the ERJ 175, the defined minimum autopilot use height is 50 feet. That means you can keep the autopilot engaged down to 50 ft above the ground on an approach, giving you enough time to monitor the flight path, verify configuration, and be prepared to manually land or transition to a safe manual flare if needed. Going lower than 50 ft RA isn’t permitted by the limit, and values like 20 ft would leave too little margin to intervene, while 100 or 150 ft would exceed the minimum and unnecessarily constrain the pilot.