14 C.F.R. § 1215.110 User cancellation of all services.
Title 14 - Aeronautics and Space
The user has the right to terminate its service contract with NASA at any time. A user who exercises this right after contracting for service shall pay the charge agreed upon for services previously rendered, and the cost incurred by the Government for support of pre-launch activities, services, and mission documentation not included in that charge. The user will remain responsible for the charges for any services actually provided.
Title 14: Aeronautics and Space
PART 1215—TRACKING AND DATA RELAY SATELLITE SYSTEM (TDRSS)
Subpart 1215.1—Use and Reimbursement Policy for Non-U.S. Government Users
§ 1215.110 User cancellation of all services.