47 C.F.R. § 3.50 Retention of settlement records.
Title 47 - Telecommunication
Accounting authorities must maintain, for the purpose of compliance with these rules, all settlement records for a period of at least seven years following settlement of an account with a foreign administration or agent.
Title 47: Telecommunication
PART 3—AUTHORIZATION AND ADMINISTRATION OF ACCOUNTING AUTHORITIES IN MARITIME AND MARITIME MOBILE-SATELLITE RADIO SERVICES
Settlement Operations
§ 3.50 Retention of settlement records.