{"data":{"id":"us/49-cfr-821.21","jurisdiction":"us","citation":"49 CFR 821.21","heading":"Official notice.","body":"Where a law judge or the Board intends to take official notice of a material fact not appearing in the evidence in the record, notice shall be given to all parties, who may within 10 days file a petition disputing that fact.","path":["Title 49—Transportation","Subtitle B—Other Regulations Relating to Transportation","CHAPTER VIII—NATIONAL TRANSPORTATION SAFETY BOARD","PART 821—RULES OF PRACTICE IN AIR SAFETY PROCEEDINGS","Subpart B—General Rules Applicable to Petitions for Review, Appeals to the Board, and Appeals From Law Judges Initial Decisions and Appealable 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":"6720fd2eedbadd94cc50e1b46b597f552db103f829f2c16a5a3b3a1146e0d27d","source_id":"us-cfr","stale":true,"prev":"us/49-cfr-821.20","next":"us/49-cfr-821.24"},"notice":"GroundRules: Original legal text. Not legal advice."}