Except when necessary for takeoff or landing, what is the minimum safe altitude for a pilot to operate an aircraft anywhere?

• A. An altitude allowing, if a power unit fails, an emergency landing without undue hazard to persons or property on the surface
• B. 1,000 feet above the surface
• C. 500 feet AGL
• D. 2,000 feet above the surface

Answer: (A)

Minimum safe altitude is the altitude at which, if the power unit fails, you could perform an emergency landing without undue hazard to people or property on the surface. This safety margin is what you must maintain everywhere except during takeoff or landing. It isn’t a fixed number like 1,000 or 500 feet; those figures are specific area-related minimums for obstacle clearance in certain situations, but they don’t describe the universal requirement for an emergency landing option. In practice, you plan and fly with enough altitude to ensure a safe forced landing in case of an engine failure, which is why this definition best matches the concept.