What was found
DURING A C-CHECK, NR 3 SLAT INT FRAME BOTTOM AFT WS 525 IS CRACKED IN RADIUS. REMOVED NR 3 SLAT FOR SHEET METAL ACCESS IAW B727 M/M 27-81-11. REMOVED CRACKED RIB ON NR 3 SLAT IAW B727 SRM 51-30-2. FABRICATED RIB FROM 7075-T6 .032 SIZE 15 X 5.5 INCHES PO 900573 IAW B727 SRM 57-50-2. TREATED AND PRIMED PART AND AREA IAW B727 SRM 51-10-2. INSTALLED RIB IAW B727 SRM 51-30-2. INSTALLED NR 3 SLAT IAW B727 M/M 27-81-11.