What was found
(AUS) AGPS AND RADIO TRANSCEIVER REMOVED AND GPS/COM FITTED. AUDIO PANEL REMOVED AND A DIFFERENT ITEM FITTED. SEVERAL DEFECTS FOUND ASSOCIATED WITH INSTALLATION. NO ENTRY IN LOG BOOK, NO WEIGHT AND BALANCE CHANGE, NO ELECTRICAL LOAD ANALYSIS NO E/O'S IN LOG BOOK INCORRECT COAXIAL CABLE FITTED IAW INSTALLATION MANUAL INCORRECT GPS ANTENNA IAW INSTALLATION MANUAL. NO ADHERENCE TO ACCEPTABLE METHODS 8. SEVERAL INCONSISTENCIES NOW WITH RADIO SYSTEM IE. LABELING WRONG, ABSENCE OF NOTCH FILTERS, SIDETONE ISSUES. NO EVIDENCE OF FLIGHT CHECKING (IAW CAO 108.34) OF MARKER BEACON PERSONNEL/MAINTENANCE ERROR. UNAPPROVED MAINTENANCE.