Applications for exemption filed under the provisions of sections 352(b) or 383 of the Communications Act; Regulation 4, chapter I of the Safety Convention; Regulation 5, chapter IV of the Safety Convention; or subpart T of Part 80, must be filed as a waiver request using the procedures specified in § 0.482. Emergency requests must be filed via the Universal Licensing System or at the Federal Communications Commission, Office of the Secretary.