14 C.F.R. § 171.251 Scope.
Title 14 - Aeronautics and Space
This subpart sets forth minimum requirements for the approval and operation of non-Federal Interim Standard Microwave Landing System (ISMLS) facilities that are to be involved in the approval of instrument flight rules and air traffic control procedures related to those facilities.
Title 14: Aeronautics and Space
PART 171—NON-FEDERAL NAVIGATION FACILITIES
Subpart I—Interim Standard Microwave Landing System (ISMLS)
§ 171.251 Scope.
