U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 14Chapter IPart 171Subpart I - Subpart I—Interim Standard Microwave Landing System (ISMLS)
View all text of Subpart I [§ 171.251 - § 171.275]
§ 171.269 - Marker beacon performance requirements.

ISMLS marker beacon equipment must meet the performance requirements prescribed in subpart H of this part.

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