What is the lowest altitude permitted for acrobatic flight?

The lowest altitude permitted for acrobatic flight is 500 feet (152 meters) above the highest obstacle within a horizontal radius of 2,000 feet (610 meters) from the aircraft. This is as per the Federal Aviation Administration (FAA) regulations in the United States. Some countries and local jurisdictions may have different altitude restrictions, so it is always important to check the local regulations before engaging in acrobatic flight.