What is the minimum autopilot altitude for enroute segments?

• A. 2000'
• B. 1000'
• C. 1500'
• D. 500'

Answer: (B)

The key idea here is the safe, hands-off operation window for the autopilot during the enroute phase. Enroute you want stable altitude maintenance with enough margin to react if something goes wrong, so the systems specify a practical floor for autopilot engagement.

Setting the minimum autopilot altitude at 1,000 feet provides a comfortable buffer above terrain and obstacles while still allowing efficient flight management. It gives you time to recognize any autopilot issues, switch modes if needed, and take manual control without rushing near the ground. That margin would be too small at 500 feet, where a deviation or system hiccup could quickly become dangerous, and the higher numbers (1,500 or 2,000 feet) would unnecessarily constrain operations without added safety in typical enroute conditions.

So, the enroute autopilot can be engaged and maintained at a minimum of 1,000 feet above the ground, balancing safety with efficiency.