{"data":{"id":"us/14-cfr-25.1397","jurisdiction":"us","citation":"14 CFR 25.1397","heading":"Color specifications.","body":"Each position light color must have the applicable International Commission on Illumination chromaticity coordinates as follows:\n(a) Aviation red—\ny is not greater than 0.335; and\nz is not greater than 0.002.\n(b) Aviation green—\nx is not greater than 0.440−0.320y ;\nx is not greater than y−0.170; and\ny is not less than 0.390−0.170x.\n(c) Aviation white—\nx is not less than 0.300 and not greater than 0.540;\ny is not less than x−0.040; or y0−0.010, whichever is the smaller; and\ny is not greater than x + 0.020 nor 0.636−0.400x;\nWhere y0 is the y coordinate of the Planckian radiator for the value of x considered.","path":["Title 14—Aeronautics and Space","CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER C—AIRCRAFT","PART 25—AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES","Subpart F—Equipment"],"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":"3ae847253618b65b510955e0a44e41c25d30a9c20f48ca39445412d1cd26b7b4","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-25.1395","next":"us/14-cfr-25.1399"},"notice":"GroundRules: Original legal text. Not legal advice."}