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Advisory Circulars (ACs)

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Advisory Circulars (ACs) search results
Number Title Status Office Date
170-9A Criteria for Assumption of Ownership of Non-Federal Systems

This Advisory Circular (AC) contains policy under which the Federal AviationAdministration (FAA) accepts the transfer of non-federally procured equipment/systems fromnon-federal sponsors/owners.

Active AJW-121 2021-05-25
170-14 Implementation of 50 kHz/Y Channels for ILS/VOR/DME

Advises aircraft owners, operators, and radio equipment manufacturers of the FAA’s continued implementation of 50 kHz/Y or Omnidirectional Range (VOR) frequency assignments.

 Active ASM-500 1992-07-30
170-6C Use of Radionavigation Land Test Station and Signal Generators

Gives information as to the frequencies on which the FAA will authorize and the FCC will license radionavigation land test stations.

Active ASM-500 1981-02-13