What is the minimum safe altitude over open water or sparsely populated areas?

• A. An altitude of 1,000 feet above the highest obstacle within a radius of 2,000 feet
• B. An altitude of 500 feet AGL, except over open water or a sparsely populated area, which requires 500 feet from any person, vessel, vehicle or structure
• C. 1,000 feet above ground
• D. 3,000 feet

Answer: (B)

Over open water or sparsely populated areas, the minimum altitude is lower because there are fewer people and structures on the surface to pose a hazard, so you only need to stay about 500 feet above the surface. This 500-foot buffer gives you a reasonable margin for a forced landing or engine failure while reducing risk to surface objects. You still must avoid coming down close to people, vessels, vehicles, or structures, which is why you’re also kept at a safe horizontal distance from surface objects. The higher altitude rules (such as 1,000 feet above the highest obstacle within 2,000 feet) apply to more populated or obstacle-dense areas, not open water or sparsely populated regions. The 3,000-foot option is not aligned with the standard minimums for any typical surface category. So, the minimum safe altitude over open water or sparsely populated areas is 500 feet above the surface.