Except when necessary for takeoff or landing, what is the minimum safe altitude for a pilot to operate an aircraft anywhere that allows, if a power unit fails, an emergency landing without undue hazard to persons or property on the surface?

Except when necessary for takeoff or landing, what is the minimum safe altitude for a pilot to operate an aircraft anywhere that allows, if a power unit fails, an emergency landing without undue hazard to persons or property on the surface?

• 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 ft above the highest obstacle within a horizontal radius of 2,000 ft
• C. 500 ft AGL, except over open water or a sparsely populated area, which requires 500 ft from any person, vessel, vehicle, or structure
• D. 500 ft

Answer: (A)

Minimum safe altitude is the altitude that would allow you to reach a suitable landing area on the surface if the power unit fails, without creating undue hazard to people or property. That definition is why the best answer states that the altitude must be enough to permit an emergency landing safely. The other options give fixed numbers (like 1,000 ft above obstacles in congested areas or 500 ft in non-congested areas), which are specific minimums for certain situations, but they don’t convey the general concept of a height that ensures you could select a safe emergency landing spot.

Minimum safe altitude is the altitude that would allow you to reach a suitable landing area on the surface if the power unit fails, without creating undue hazard to people or property. That definition is why the best answer states that the altitude must be enough to permit an emergency landing safely. The other options give fixed numbers (like 1,000 ft above obstacles in congested areas or 500 ft in non-congested areas), which are specific minimums for certain situations, but they don’t convey the general concept of a height that ensures you could select a safe emergency landing spot.