14 CFR 298.53 - Suspension or revocation of authority.
A Commuter Air Carrier Authorization may be suspended or revoked if any of the following occur:
(a) The operator fails to maintain insurance coverage as required by part 205 of this chapter for commuter operations;
(b) The scheduled passenger authority under the operator's Air Carrier Certificate is suspended or revoked by the Federal Aviation Administration;
(c) The operator does not commence operations for which it has been found fit, or the operator ceases those operations as provided in § 204.7 of this chapter;
(d) The Department finds that the carrier is not fit, willing, and able to conduct scheduled service or fails to qualify as a citizen of the United States; or
(e) The Department determines that it is otherwise in the public interest to do so.