§ 171.251. Scope.
41 words·~1 min read·
/us/cfr/t14/s§ 171.251·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
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.