What was found
APU INLET DOOR SHROUD CUT-OUT AFT SUPPORT FRAME CORRODED. BLENDED CORRODED AREA OF APU INLET DOOR CUT-OUT IAW SRM 51-10-02, FOUND TO BE OUT OF LIMITS IAW SRM 53-80-15, FIG 101, DET II FABRICATED AND INSTALLED REPAIR PARTS IAW SRM 53-80-15, REPAIR 1, DET I. PN: FX148N3138, CATEGORY "A" REPAIR MAJOR REPAIR.