{"data":{"id":"us/14-cfr-99.3","jurisdiction":"us","citation":"14 CFR 99.3","heading":"Definitions.","body":"Aeronautical facility means, for the purposes of this subpart, a communications facility where flight plans or position reports are normally filed during flight operations.\nAir defense identification zone (ADIZ) means an area of airspace over land or water in which the ready identification, location, and control of all aircraft (except for Department of Defense and law enforcement aircraft) is required in the interest of national security.\nDefense area means any airspace of the contiguous United States that is not an ADIZ in which the control of aircraft is required for reasons of national security.\nDefense visual flight rules (DVFR) means, for the purposes of this subpart, a flight within an ADIZ conducted by any aircraft (except for Department of Defense and law enforcement aircraft) in accordance with visual flight rules in part 91 of this title.","path":["Title 14—Aeronautics and Space","CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER F—AIR TRAFFIC AND GENERAL OPERATING RULES","PART 99—SECURITY CONTROL OF AIR TRAFFIC","Subpart A—General"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-14.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:20Z","sha256":"c95e2caf02668ab51cce939c2fe19a84f8ae80bf661a5887601fa746a027e345","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-99.1","next":"us/14-cfr-99.5"},"notice":"GroundRules: Original legal text. Not legal advice."}