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20-181 - Airworthiness Approval of Attitude Heading Reference System (AHRS) Equipment

Date Issued
April 07, 2014
Responsible Office
AIR-130,  Aviation Safety - Aircraft Certification Service, Aircraft Engineering Division

This advisory circular (AC) supplements existing airworthiness approval guidance for attitude heading reference system (AHRS) articles approved under technical standard order (TSO)?C201, Attitude Heading Reference System, or later revisions.  TSO-C201 includes performance standards for non-gimbaled attitude, heading, and turn and slip systems.