Really sad when you can fly a 5 pound kite or a 6 foot diameter balloon with fewer restrictions than a much smaller 1.28 kg phantom .,,,,,, "The big rules regarding kites/balloons kick in for a kite "over 5 pounds" or a balloon "over 6 feet in diameter / 115 cubic feet of gas capacity", and are: You have to keep them at least 500 feet below any clouds. You have to keep them less than 500 feet above the ground. You must be at least 5 miles from the boundary of any airport. If your kite/balloon is going to be more than 150 feet above the surface you're also supposed to coordinate with the closest ATC facility (who would theoretically put out a NOTAM saying "John Doe is going to be flying a kite/balloon/thingy here, between these hours. Please try not to hit it.")"