14 C.F.R. § 298.24 Cancellation of the registration.
Title 14 - Aeronautics and Space
The registration of an air taxi operator may be canceled by the Department if any of the following occur: (a) The operator ceases its operations; (b) The operator's insurance coverage changes or lapses; (c) The operator fails to file an amended registration when required by §298.23; (d) The operator's Air Carrier Certificate and/or Operations Specifications is revoked by the Federal Aviation Administration; (e) The operator fails to qualify as a citizen of the United States; (f) The Department determines that it is otherwise in the public interest to do so.
Title 14: Aeronautics and Space
PART 298—EXEMPTIONS FOR AIR TAXI AND COMMUTER AIR CARRIER OPERATIONS
Subpart C—Registration for Exemption by Air Taxi Operators
§ 298.24 Cancellation of the registration.