14 CFR 297.50: Enforcement.

In case of any violation of any of the provisions of 49 U.S.C. Subtitle VII , or this part, or any other rule, regulation or order issued under the Statute, the violator may be subject to a proceeding under section 46101 of 49 U.S.C. Subtitle VII before the Department, or sections 46106 through 46108 of 49 U.S.C. Subtitle VII before a U.S. District Court, as the case may be, to compel to compliance; or to civil penalties under the provisions of section 46301 of 49 U.S.C. Subtitle VII; or in the case of willful violation, to criminal penalties under the provisions of section 46316 of 49 U.S.C. Subtitle VII; or other lawful sanctions including cancellation of registration.