{"data":{"id":"us/14-cfr-187.3","jurisdiction":"us","citation":"14 CFR 187.3","heading":"Definitions.","body":"For the purpose of this part:\nGreat circle distance means the shortest distance between two points on the surface of the Earth.\nOverflight means a flight through U.S.-controlled airspace that does not include a landing in or takeoff from the United States.\nOverflight through Enroute airspace means an overflight through U.S.-controlled airspace where primarily radar-based air traffic services are provided.\nOverflight through Oceanic airspace means an overflight through U.S.-controlled airspace where primarily procedural air traffic services are provided.\nU.S.-controlled airspace means all airspace over the territory of the United States, extending 12 nautical miles from the coastline of U.S. territory; any airspace delegated to the United States for U.S. control by other countries or under a regional air navigation agreement; or any international airspace, or airspace of undetermined sovereignty, for which the United States has accepted responsibility for providing air traffic control services.","path":["Title 14—Aeronautics and Space","CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER K—ADMINISTRATIVE REGULATIONS","PART 187—FEES"],"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":"31d32abe27414e4a89750586d94da229c7306fac905495ff91db2cccb26e23db","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-187.1","next":"us/14-cfr-187.5"},"notice":"GroundRules: Original legal text. Not legal advice."}