Section 1511.9 - Accounting and auditing requirements(a) Each air carrier and foreign air carrier must submit an audit performed by an independent certified public accountant of the information provided pursuant to this part to the Transportation Security Administration by July 1, 2002. The cost of the audit will be borne by the carrier. The accountant must express an opinion as to the fairness and reasonableness of the air carrier's and foreign air carrier's procedures used for accounting and remitting the fees. The accountant's working papers with respect to the audit must accompany this submission.(b) Each air carrier and foreign air carrier must maintain and retain any and all documents, records, or information related to the amount of the Aviation Security Infrastructure Fees imposed on the carrier pursuant to this part, including all information applicable to the costs submitted in Appendix A, and information that is reasonably necessary to complete an audit.