14 C.F.R. § 103.19 Operations in prohibited or restricted areas.
Title 14 - Aeronautics and Space
No person may operate an ultralight vehicle in prohibited or restricted areas unless that person has permission from the using or controlling agency, as appropriate.
Title 14: Aeronautics and Space
PART 103—ULTRALIGHT VEHICLES
Subpart B—Operating Rules
§ 103.19 Operations in prohibited or restricted areas.