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Number Office Title Date
20-180 AIR-110 Approved Model List Supplemental Type Certificate (AML-STC)

This advisorycircular(AC)providesguidelines and requirements to obtain approved model list (AML)supplemental typecertificate(STC).  This ACis not mandatoryand does not constitutearegulation.  It describes anacceptablemethod, but not theonlymethod to obtain an AML-STC.  You mayusean alternatemethod ifyou establish that it adequatelymeets therequirements.  However, ifyou usethis ACto obtain approval,you must comply with all ofits provisions.

05-14-2013
20-181 AIR-130 Airworthiness Approval of Attitude Heading Reference System (AHRS) Equipment

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. 

04-07-2014
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