What was found
DURING MAINTENANCE VISIT, CORROSION DAMAGE WAS NOTED TO THE LOWER AFT SURFACE OF THE STA 1417 FLOOR BEAM UPPER (368-53-16-94201-101) T-CAP FLANGE, AT LBL 6, THAT FALLS OUTSIDE OF THE LIMITS OF IAI SRM SUPPLEMENT 53-00-51. THE CORROSION DAMAGE IS LOCATED IN THE TAPERED END SECTION OF THE UPPER FLANGE WITH THE GREATEST MEASURED MATERIAL LOSS BEING 46.5 PERCENT. THE REPAIR ACCOMPLISHED IS ACCEPTABLE AND HAS STAGE 1 APPROVAL FOR STATIC STRENGTH, PER FAA FORM 8110-3 SIGNED BY ROBERT MANASHI, DERT-710167-SW, DATED 10-SEP-2020. REF.ABX-REA-5360-64021-00.