Operating limitations for Class 2-High Power Rockets and Class 3-Advanced High Power Rockets.
CFR · 2024-01-01 · US · Title 14
When operating (a) At any altitude where clouds or obscuring phenomena of more than five-tenths coverage prevails; (b) At any altitude where the horizontal visibility is less than five miles; (c) Into any cloud; (d) Between sunset and sunrise without prior authorization from the FAA; (e) Within 9.26 kilometers (5 nautical miles) of any airport boundary without prior authorization from the FAA; (f) In controlled airspace without prior authorization from the FAA; (g) Unless you observe the greater of the following separation distances from any person or property that is not associated with the operations: (1) Not less than one-quarter the maximum expected altitude; (2) 457 meters (1,500 ft.); (h) Unless a person at least eighteen years old is present, is charged with ensuring the safety of the operation, and has final approval authority for initiating high-power rocket flight; and (i) Unless reasonable precautions are provided to report and control a fire caused by rocket activities.
official document · source cfr-2024 · id 14:§ 101.25