Advisory U.S.
Department of Transportation Federal Aviation Circular Administration Subject: AIRWORTHINESS APPROVAL OF
Date: 4/7/14
AC Nob ATTITUDE HEADING REFERENCE SYSTEM
Initiated By AIR-130
(AHRS) EQUIPMENT
1.
GENERAL INFORMATION.
1.1
Purpose. 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. Appendix A contains a list of acronyms. Appendix B explains whereto obtain reference documents. Refer to the latest revision of following list of ACs to complete the aircraft type specific primary or standby flight instrument airworthiness certification process
a) AC 20-167, Airworthiness Approval of Enhanced Vision Systems, Synthetic Vision Systems,
Combined Vision Systems, and Enhanced Flight Vision Systems
b) AC 23-8, Flight Test Guide for Certification of Part 23 Airplanes;
c) AC 23-17, Systems and Equipment Guide for Certification of Part 23 Airplane and
Airships;
d) AC 23.1309-1, System Safety Analysis and Assessment for Part 23 Airplanes
e) AC 23.1311-1, Installation of Electronic Displays in Part 23 Airplanes;
f) AC 25-7, Flight Test Guidance for Part 25 Airplanes;
g) AC 25-11, Electronic Flight Deck Displays
h) AC 25.1302-1, Installed Systems and Equipment for Use by the Flightcrew;
i) AC 25.1309-1, System Design and Analysis;
j) AC 25.1322-1, Flightcrew Alerting;
k) AC 25.1329-1, Approval of Flight Guidance Systems;