What was found
DURING AIRCRAFT C-CHECK AT AIRBORNE (TAMPA), MAINTENANCE REPORTED DAMAGE TO THE AFT STIFFENER ON THE #2 ENGINE INBOARD THRUST REVERSER. DAMAGE WAS CAUSED BY IDG FEEDER CABLE(S) SHORTING AND ARCING TO THE STIFFENER. AN INTERIM REPAIR WAS ACCOMPLISHED BY LINE MX PER ABX-REA-7830-64869-00, AND THE INTERIM REPAIR IS SCHEDULED TO BE REPLACED BY A PERMANENT REPAIR AT THIS MX VISIT. THE AFFECTED STIFFENER (315T3100-8) IS MADE FROM BAC1506-3279 PROFILE (2219-T62 MATERIAL). THE DAMAGED VERTICAL FLANGE OF THE STIFFENER IS 0.090” THICK. FLIGHT VEHICLES CONSULTING INC. WAS CONTACTED WITH REPAIR PROPOSAL, AND PERMANENT REPAIR INSTRUCTIONS WERE APPROVED. REPAIRED PER ABX-REA-7830-64792-00. VENDOR DID NOT REPORT REPAIR TO ABX AIR. THIS WAS DICOVERED BY AN FAA AUDIT OF THE VENDOR.