14 CFR 91.119 — Minimum Safe Altitudes
1,000 feet above obstacles in congested areas (within 2,000 ft horizontal), 500 feet AGL over uncongested areas, and safe altitude over open water or sparsely populated areas.
Regulation Text
Except when necessary for takeoff or landing, no person may operate an aircraft below the following altitudes: Anywhere — an altitude allowing, if a power unit fails, an emergency landing without undue hazard to persons or property on the surface. Over congested areas — 1,000 feet above the highest obstacle within a horizontal radius of 2,000 feet. Over other than congested areas — 500 feet above the surface, except over open water or sparsely populated areas, where the aircraft may not be operated closer than 500 feet to any person, vessel, vehicle, or structure.
Note: This is an excerpt. Refer to the full regulation in eCFR for the complete text.
Plain-English Explanation
You must always fly high enough that if your engine quits, you can land without endangering people on the ground. Over cities and towns: 1,000 feet above the tallest obstacle within 2,000 feet of you. Over rural areas: 500 feet AGL. Over open water or unpopulated areas: just stay 500 feet from any person, boat, vehicle, or structure. Helicopters have different rules — they can go lower if they can land safely.
Tested On These Exams
Related Regulations
14 CFR 91.117 — Aircraft Speed
250 knots below 10,000 ft MSL, 200 knots below Class B, 200 knots in Class C/D surface areas and within 4 NM of Class C/D primary airports.
§91.1314 CFR 91.13 — Careless or Reckless Operation
Prohibits operating an aircraft in a careless or reckless manner so as to endanger the life or property of another.
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