FMSCA Regulation 365.509
365.509 Requirement to notify FMCSA of change in applicant information.
(a) A motor carrier subject to this subpart must notify the FMCSA of any changes or corrections to the information in parts I, IA or II submitted on the Form OP-1(MX) or the Form BOC-3-Designation of Agents-Motor Carriers, Brokers and Freight Forwarders during the application process or after having been granted provisional operating authority. The carrier must notify the FMCSA in writing within 45 days of the change or correction.
(b) If a carrier fails to comply with paragraph (a) of this section, the FMCSA may suspend or revoke its operating authority until it meets those requirements.
