§ 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 responsible Flight Standards 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. 35°59′58′′ N., Long. 111°52′47′′ W.; thence east to Lat. 36°00′00′′ N., Long. 111°51′04′′ W.; thence north to 36°00′24′′ N., Long. 111°51′04′′ W.; thence east to 36°00′24′′ N., Long. 111°45′44′′ W.; thence north along the GCNP boundary to Lat. 36°14′05′′ N., Long. 111°48′34′′ W.; thence southwest to Lat. 36°12′06′′ N., Long. 111°51′14′′ 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 air tour 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. 35°58′39′′ N., Long. 111°55′43′′ W.; north to Lat. 36°12′41′′ N., Long. 111°53′54′′ W.; northwest to Lat. 36°18′18′′ N., Long. 111°58′15′′ W.; thence west along the GCNP boundary to Lat. 36°20′11′′ N., Long. 112°06′25′′ W.; south-southwest to Lat. 36°09′31′′ N., Long. 112°11′15′′ W.; to Lat. 36°04′16′′ N., Long. 112°17′20′′ W.; thence southeast along the GCNP boundary to Lat. 36°01′54′′ N., Long. 112°11′24′′ W.; thence clockwise via the 4.3-nautical mile radius of the Grand Canyon National Park Airport reference point (Lat. 35°57′08′′ N., Long. 112°08′49′′ W.) to Lat. 35°59′37′′ N., Long. 112°04′29′′ 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 air tour flights and 4 nautical miles wide for transient and general aviation operations. The Bright Angel Flight-free Zone does not include the following airspace designated as the Bright Angel Corridor: That airspace one-half nautical mile on either side of a line extending from Lat. 36°14′57′′ N., Long. 112°08′45′′ W. and Lat. 36°15′01′′ N., Long. 111°55′39′′ W.
( 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. 36°05′44′′ N., Long. 112°19′27′′ W.; north-northeast to Lat. 36°10′49′′ N., Long. 112°13′19′′ W.; to Lat. 36°21′02′′ N., Long. 112°08′47′′ W.; thence west and south along the GCNP boundary to Lat 36°10′58′′ N., Long. 113°08′35′′ W.; south to Lat. 36°10′12′′ N., Long. 113°08′34′′ 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. 36°24′42′′ N., Long. 112°48′47′′ W. and Lat. 36°14′17′′ N., Long. 112°48′31′′ W. The airspace designated as the “Fossil Canyon Corridor” is also excluded from the Toroweap/Shinumo Flight-free Zone at or above 10,500 feet MSL within 2 nautical miles either side of a line extending between Lat. 36°16′26′′ N., Long. 112°34′35′′ W. and Lat. 36°22′51′′ N., Long. 112°18′18′′ W. The Fossil Canyon Corridor is to be used for transient and general aviation operations only.
( 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. 35°59′32′′ N., Long. 113°20′28′′ W.; west to Lat. 36°00′55′′ N., Long. 113°42′09′′ W.; southeast to Lat. 35°59′57′′ N., Long. 113°41′09′′ W.; to Lat. 35°59′09′′ N., Long. 113°40′53′′ W.; to Lat. 35°58′45′′ N., Long. 113°40′15′′ W.; to Lat. 35°57′52′′ N., Long. 113°39′34′′ W.; to Lat. 35°56′44′′ N., Long. 113°39′07′′ W.; to Lat. 35°56′04′′ N., Long. 113°39′20′′ W.; to Lat. 35°55′02′′ N., Long. 113°40′43′′ W.; to Lat. 35°54′47′′ N., Long. 113°40′51′′ W.; southeast to Lat. 35°50′16′′ N., Long. 113°37′13′′ W.; thence along the park boundary to the point of origin.
[Doc. No. 28537, 61 FR 69330, Dec. 31, 1996, as amended by Amdt. 93-80, 65 FR 17742, Apr. 4, 2000; Amdt. 93-102, 83 FR 48212, Sept. 24, 2018]