What was found
DURING C-CHECK IN CWA, RT INBOARD FLAP SUPPORT AT WS 142 IS CRACKED. MAINTENANCE REMOVED OLD RIB SUPPORT AND INSTALLED NEW SUPPORT P/N 7255900-064 IAW SRM 51-20. MAINTENANCE INSTALLED NEW REAR FRAME P/N 7257840-082 IAW MAL EO 57042, FWD CORE FRAME DIAGONAL SUPPORT IS CRACKED, INSTALLED NEW P/N 7257840-078, AND 7257840-080, AND REPLACED WORN WEAR STRIP WITH NEW ONE P/N 7257800-101 IAW SRM 57-80-10-2.