What is the minimum altitude above MSL over non-congested areas?

The minimum altitude above Mean Sea Level (MSL) over non-congested areas is 500 feet. This regulation is intended to ensure safety by providing sufficient altitude to avoid obstacles and allow for safe landing if an emergency arises. Over non-congested areas, which are defined as areas with very few people or structures, maintaining this altitude helps to mitigate the risks associated with low-level flight.

Flying at least 500 feet above the surface allows for a buffer against trees, hills, and other obstructions that might not be readily visible from the air, as well as provides time to react in case of an emergency situation. This altitude requirement is particularly important for ensuring that pilots maintain safety margins during their operations and promotes responsible flying practices in less populated areas.

The other options do not apply to non-congested areas. For example, while higher altitudes could offer even greater safety margins, the law specifically defines 500 feet as the minimum necessary to balance safety and operational flexibility.