31 C.F.R. § 560.528 Aircraft safety.
Title 31 - Money and Finance: Treasury
Specific licenses may be issued on a case-by-case basis for the exportation and reexportation of goods, services, and technology to insure the safety of civil aviation and safe operation of U.S.-origin commercial passenger aircraft.
Title 31: Money and Finance: Treasury
PART 560—IRANIAN TRANSACTIONS REGULATIONS
Subpart E—Licenses, Authorizations and Statements of Licensing Policy
§ 560.528 Aircraft safety.