CFR > Title 14 - Aeronautics and Space > CHAPTER III—COMMERCIAL SPACE TRANSPORTATION, FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION > SUBCHAPTER B—PROCEDURE (parts 404 to 406) > PART 406—INVESTIGATIONS, ENFORCEMENT, AND ADMINISTRATIVE REVIEW > SUBPART B—Rules of Practice in FAA Space Transportation Adjudications (§406.101 to §406.179) > 406.123—Waivers.