What was found
AT C-CHECK, BS 950 A FRAME IS CORRODED FROM STRINGER 28 LEFT TO STR 30 LEFT. REMOVED FLOOR SUPPORT, CUT OUT CORRODED SHEAR TIES, FROM STR 30 TO 28 LEFT, HFEC, COUNTER SINKS AT FRAME PER SRM. INSTALLED SHEAR TIE REPAIR FROM STRINGER 28 LEFT TO 29 PER SRM 53-10-4. REINSTALLED FLOOR SUPPORTS.