49 CFR 368.4 – Requirement to notify FMCSA of change in applicant information
(a) You must notify FMCSA of any changes or corrections to the information in Section A of Form MCSA-1—FMCSA Registration/Update (USDOT Number—Operating Authority Application), or the Form BOC-3, Designation of Agents-Motor Carriers, Brokers and Freight Forwarders, during the application process or while you have a Certificate of Registration. You must notify FMCSA in writing within 30 days of the change or correction.
(b) If you fail to comply with paragraph (a) of this section, the FMCSA may suspend or revoke the Certificate of Registration until you meet those requirements.