The audit requirements set forth in § 1773.39 through 1773.45 must be met annually by the auditor during the audit of the RUS auditee's financial statements. The auditor must exercise professional judgment in determining whether any auditing procedures in addition to those mandated by GAGAS or this part should be performed on the auditee's financial records in order to afford a reasonable basis for rendering the auditor's report on the financial statements, report on internal controls over financial reporting and on compliance and other matters, report on compliance with aspects of contractual agreements and regulatory requirements, and schedule of findings and recommendations.