What was found
MAIN PASSENGER CABIN CORROSION ON FRAME AT BS 440, LT APPROXIMATELY AT STRINGER 3L. BLENDED CORROSION AT ATA 440 NEAR STR 3-L AT A GROUND STUD ORIG "T" .056, 0 REMAINING 100 PERCENT LOSS. REMOVED DAMAGED SECTION OF FRAME AND REPAIRED IAW SRM 53-00-07, REPAIR 1. REDEFERRED LOG TO QC, ESTABLISHED MONITOR INSPECTION 21-0553-8-8247, SN 05645 IN 21-0553-8-8248, SN 05645 REP.