14 CFR 171.251 - Scope.
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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 published on 2015-01-01.
No entries appear in the Federal Register after this date, for 14 CFR Part 171.