Sec. 93.305 - Flight-free zones and flight corridors.

Except in an emergency or if otherwise necessary for safety of flight, or unless otherwise authorized by the Flight Standards District Office for a purpose listed in 93.309, no person may operate an aircraft in the Special Flight Rules Area within the following flight-free zones:

(a) Desert View Flight-free Zone. That airspace extending from the surface up to but not including 14,500 feet MSL within an area bounded by a line beginning at Lat. 3559&min;58&sec; N., Long. 11152&min;47&sec; W.; thence east and north along the GCNP boundary to Lat. 3614&min;05&sec; N., Long. 11148&min;34&sec; W.; southwest to Lat. 3612&min;06&sec; N., Long. 11151&min;14&sec; W.; to the point of origin; but not including the airspace at and above 10,500 feet MSL within 1 nautical mile of the western boundary of the zone. The corridor to the west, between the Desert View and Bright Angel Flight-free Zones, is designated the "Zuni Point Corridor." This corridor is 2 nautical miles wide for commercial sightseeing flights and 4 nautical miles wide for transient and general aviation operations.

(b) Bright Angel Flight-free Zone. That airspace extending from the surface up to but not including 14,500 feet MSL within an area bounded by a line beginning at Lat. 3558&min;39&sec; N., Long. 11155&min;43&sec; W.; north to Lat. 3612&min;41&sec; N., Long. 11153&min;54&sec; W.; northwest to Lat. 3618&min;18&sec; N., Long. 11158&min;15&sec; W.; thence west along the GCNP boundary to Lat. 3620&min;11&sec; N., Long. 11206&min;25&sec; W.; south-southwest to Lat. 3609&min;31&sec; N., Long. 11211&min;15&sec; W.; to Lat. 3604&min;16&sec; N., Long. 11217&min;20&sec; W.; thence southeast along the GCNP boundary to Lat. 3601&min;54&sec; N., Long. 11211&min;24&sec; W.; thence clockwise via the 4.3-nautical mile radius of the Grand Canyon National Park Airport reference point (Lat. 3557&min;08&sec; N., Long. 11208&min;49&sec; W.) to Lat. 3559&min;37&sec; N., Long. 11204&min;29&sec; W.; thence east along the GCNP boundary to the point of origin; but not including the airspace at and above 10,500 feet MSL within 1 nautical mile of the eastern boundary or the airspace at and above 10,500 feet MSL within 2 nautical miles of the northwestern boundary. The corridor to the east, between this flight-free zone and the Desert View Flight-free Zone, is designated the "Zuni Point Corridor." The corridor to the west, between the Bright Angel and Toroweap/Shinumo Flight-free Zones, is designated the "Dragon Corridor." This corridor is 2 nautical miles wide for commercial sightseeing flights and 4 nautical miles wide for transient and general aviation operations.

(c) Toroweap/Shinumo Flight-free Zone. That airspace extending from the surface up to but not including 14,500 feet MSL within an area bounded by a line beginning at Lat. 3605&min;44&sec; N., Long. 11219&min;27&sec; W.; north-northeast to Lat. 3610&min;49&sec; N., Long. 11213&min;19&sec; W.; to Lat. 3621&min;02&sec; N., Long. 11208&min;47&sec; W.; thence west and south along the GCNP boundary to Lat. 3610&min;58&sec; N., Long. 11308&min;35&sec; W.; south to Lat. 3610&min;12&sec; N., Long. 11308&min;34&sec; W.; thence northeast along the park boundary to Lat. 3611&min;51&sec; N., Long. 11304&min;44&sec; W.; thence counter-clockwise via the 1.5-nautical mile radius of the Toroweap Overlook (Lat. 3612&min;55&sec; N., Long. 11303&min;25&sec; W.) to Lat. 3613&min;46&sec; N., Long. 11301&min;54&sec; W.; thence in an easterly direction along the park boundary to the point of origin; but not including the following airspace designated as the "Tuckup Corridor": at or above 10,500 feet MSL within 2 nautical miles either side of a line extending between Lat. 3624&min;42&sec; N., Long. 11248&min;47&sec; W. and Lat. 3614&min;17&sec; N., Long. 11248&min;31&sec; W.

(d) Sanup Flight-free Zone. That airspace extending from the surface up to but not including 8,000 feet MSL within an area bounded by a line beginning at Lat. 3602&min;38&sec; N., Long. 11321&min;11&sec; W.; west to Lat. 3606&min;20&sec; N., Long. 11351&min;40&sec; W.; southeast to Lat. 3600&min;07&sec; N., Long. 11342&min;58&sec; W.; southeast to Lat. 3559&min;37&sec; N., Long. 11342&min;47&sec; W.; to Lat. 3559&min;20&sec; N., Long. 11343&min;00&sec; W.; to Lat. 3558&min;40&sec; N., Long. 11343&min;58&sec; W.; southeast to Lat. 3550&min;16&sec; N., Long. 11337&min;13&sec; W.; thence along the park boundary to the point of origin.