{"data":{"id":"us/49-cfr-604.21","jurisdiction":"us","citation":"49 CFR 604.21","heading":"Special considerations for advisory opinions.","body":"Based on new facts involving significant financial considerations, the Chief Counsel may take appropriate enforcement action contrary to an advisory opinion before amending or revoking the opinion. This action shall be taken only with the approval of the Administrator.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER VI—FEDERAL TRANSIT ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","PART 604—CHARTER SERVICE","Subpart E—Advisory Opinions and Cease and Desist Orders"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-49.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:34Z","sha256":"b68a9568e3675e98cc20c60cba21f9f1c527b00491a3636e248100c8747f0d5a","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-604.20","next":"us/49-cfr-604.22"},"notice":"GroundRules: Original legal text. Not legal advice."}