What was found
AFT CARGO CORROSION ON FRAME BS 1520, L26R, 4" X 1" ACP0600-161-02. REMOVED CORROSION AT AFT CARGO FRAME BS 1520, STR 26R IAW SRM 51-10-02, FOUND TO BE OUT OF LIMITS IAW SRM 53-00-07, FIG 101, MATERIAL LOSS 90 PERCENT. FABRICATED REPAIR SPLICE, ANGLE AND FILLER 4" X 20" SPLICE, ANGLE, FILLER 1" X 1" MATERIAL 7075, T5, .063, PO ST-00006938 IAW SRM 53-00-07, FIG 201, HEAT TREATED PARTS TO T6 CONDITION IAW FAS BAC5602. INSTALLED REPAIR IAW SRM 51-40-02, REPAIR IS CATEGORY B, INSPECTION THRESHOLD 37,500 FLIGHT CYCLES AFTER REPAIR INSTALL OR 50,000 AIRFRAME FLIGHT CYCLES, WHICHEVER COMES FIRST, INTERVAL INSPECTION 12,000 FLIGHT CYCLES, METHOD HFEC IAW SRM 53-00-07 TABLE II, INSTALLED REPAIR ID TAG IAW PS 900-5-1 NR 04, REPAIR SPLICE, ANGLE MADE FROM 7075 0 .071, PO ST-00006180 AND CUT OUT DIM 1" X 1". WORK IN PROGRESS.