TITLE 14 - AERONAUTICS AND SPACE

CHAPTER I - FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION

SUBCHAPTER F - AIR TRAFFIC AND GENERAL OPERATING RULES

PART 93 - SPECIAL AIR TRAFFIC RULES

subpart u - SPECIAL FLIGHT RULES IN THE VICINITY OF GRAND CANYON NATIONAL PARK, AZ

93.313 - Communications.

Except when in contact with the Grand Canyon National Park Airport Traffic Control Tower during arrival or departure or on a search and rescue mission directed by the U.S. Air Force Rescue Coordination Center, no person may operate an aircraft in the Special Flight Rules Area unless he monitors the appropriate frequency continuously while in that airspace.