297.12—General requirements.
(a)
The direct air transportation provided must be performed by direct air carriers that hold authority under section 41102, 41103, 41302, or 41701 of the Statute or are operating under part 298 of this chapter ;
(b)
Only U.S. citizen direct air carriers may provide direct air transportation operations in interstate air transportation.
(c)
Foreign indirect air carriers that hold authority to engage in foreign air transportation must apply additionally for permission to consolidate freight in interstate air transportation.