But the FAA appealed the decision to the full NTSB, and today's decision cited an FAA advisory that calls for model aircraft to be flown only at altitudes of 400 feet above ground and lower. It also noted FAA rules that prevent operating an aircraft "in a careless or reckless manner so as to endanger the life or property of another."
Below 400'. Don't see a problem with that. It's within the range of a good catapult.