The registration of an air taxi operator may be canceled by the Department if any of the following occur:
The operator ceases its operations;
The operator's insurance coverage changes or lapses;
The operator fails to file an amended registration when required by § 298.23;
The operator's Air Carrier Certificate and/or Operations Specifications is revoked by the Federal Aviation Administration;
The operator fails to qualify as a citizen of the United States;
The Department determines that it is otherwise in the public interest to do so.