CFR › Title 49 › Part 821 Part 821 — Rules of Practice in Air Safety Proceedings Subpart A — General Provisions Subpart B — General Rules Applicable to Petitions for Review, Appeals to the Board, and Appeals From Law Judges Initial Decisions and Appealable Orders Subpart C — Special Rules Applicable to Proceedings Under 49 U.S.C. 44703 Subpart D — Special Rules Applicable to Proceedings Under 49 U.S.C. 44709 Subpart G — Initial Decision Subpart H — Appeal From Initial Decision Subpart I — Special Rules Applicable to Proceedings Involving Emergency and Other Immediately Effective Orders Subpart J — Ex Parte Communications Subpart K — Judicial Review of Board Orders