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Supplemental type certificates · 2
STC ST02229SEManufacture and installation of AvtechTyee 5145-1-84 Audio Control PanelAvtechTyee Inc.STC ST02140SEInstallation of Avtech 9010-1-2 Global Positioning System (GPS) Electronic Clock in accordance with Avtech Master Drawing List (MDL) Document Number 9010-14-2, Revision A, dated February 28, 2011, or later Federal Aviation Administration (FAA) approved revision.AvtechTyee Inc.