What was found
APU AIR INTAKE DOOR HSG RT SIDE SUPPORT ANGLE HAS CORROSION UNDER NUTPLATES. REMOVED CORROSION ON RT SUPPORT ANGLE AT BS 1787-1825, S6R, IAW SRM 51-10-02. BLENDED AREA; ORIGINAL MATERIAL WAS .063" THICK/AFTER REWORK WAS .044" / HAD .019" MATERIAL LOSS. FOUND TO BE OUT OF LIMIT IAW SRM 53-80-03, FIG. 101, DETAIL 1. REMOVED SUPPORT ANGLE IAW SRM 51-40-02. FABRICATED NEW ANGLE ON MAE TRAVELER NR T9/810574. LOCATED AND DRILLED ANGLE IAW SRM 51-40-05. TREATED AND PRIMED ANGLE IAW SRM 51-20-01. INSTALLED NEW SUPPORT ANGLE AT BS 1787-1825, S6R, IAW SRM 51-40-02. THIS REPAIR IS CLASSIFIED AS A CAT "A" MAJOR REPAIR.