existing mainline carrier
Defined in 1 dictionary — U.S. Code
United States Code
39 U.S.C. § 5402 — in this section (3 versions over time)
the term “existing mainline carrier” means a mainline carrier (as defined in this subsection) that on January 1, 2001, was—
(A) certified under part 121;
(B) qualified to provide mainline nonpriority bypass mail service; and
(C) actually engaged in the carriage, on scheduled service within the State of Alaska, of mainline nonpriority bypass mail tendered to it under its designator code.3