46 C.F.R. § 515.16
(a) Grounds. Except for the automatic revocation for termination of proof of financial responsibility under § 515.26, a license may be revoked or suspended after notice and an opportunity for a hearing under the procedures of § 515.17. The notice of revocation or suspension will provide, in detail, a statement of the facts supporting the action. The licensee may request a hearing on the proposed revocation or suspension by submitting to the Commission's Secretary, within twenty (20) days of the date of the notice, a statement of reasons why the license should not be revoked or suspended. Such hearing shall be provided pursuant to the procedures contained in § 515.17. Otherwise, the action regarding the license will become effective. A license may be revoked or suspended for any of the following reasons:
[80 FR 68734, Nov. 5, 2015]