[Code of Federal Regulations] [Title 14, Volume 2] [Revised as of January 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 14CFR93.307] [Page 280-281] TITLE 14--AERONAUTICSAND SPACE CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) PART 93--SPECIAL AIR TRAFFIC RULES AND AIRPORT TRAFFIC PATTERNS--Table of Contents Subpart U--Special Flight Rules in the Vicinity of Grand Canyon National Park, AZ Sec. 93.307 Minimum flight altitudes. 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 at an altitude lower than the following: (a) Minimum sector altitudes--(1) Commercial air tours--(i) Marble Canyon Sector. Lees Ferry to Boundary Ridge: 6,000 feet MSL. (ii) Supai Sector. Boundary Ridge to Supai Point: 7,500 feet MSL. (iii) Diamond Creek Sector. Supai Point to Diamond Creek: 6,500 feet MSL. (iv) Pearce Ferry Sector. Diamond Creek to the Grand Wash Cliffs: 5,000 feet MSL. (2) Transient and general aviation operations--(i) Marble Canyon Sector. Lees Ferry to Boundary Ridge: 8,000 feet MSL. (ii) Supai Sector. Boundary Ridge to Supai Point: 10,000 feet MSL. (iii) Diamond Creek Sector. Supai Point to Diamond Creek: 9,000 feet MSL. (iv) Pearce Ferry Sector. Diamond Creek to the Grand Wash Cliffs: 8,000 feet MSL. (b) Minimum corridor altitudes--(1) Commercial air tours--(i) Zuni Point Corridors. 7,500 feet MSL. (ii) Dragon Corridor. 7,500 feet MSL. (2) Transient and general aviation operations--(i) Zuni Point Corridor. 10,500 feet MSL. (ii) Dragon Corridor. 10,500 feet MSL. (iii) Tuckup Corridor. 10,500 feet MSL. [[Page 281]] (iv) Fossil Canyon Corridor. 10,500 feet MSL. [Doc. No. 28537, 61 FR 69330, Dec. 31, 1996, as amended by Amdt. 93-80, 65 FR 17742, 17743, Apr. 4, 2000]