What was found
GUSSET ON LT SIDE OF AFT FUSELAGE FLOOR LEVEL BEHIND LOWER SIDEWALL AT FR 79, CRACKED. REMOVED LT SIDE SHEAR PLATE AT FLOOR LEVEL AT FR 79 IAW SRM'S 51-40-21 AND 51-72-10. LOCATED AND DRILLED NEW SHEAR PLATE IAW SRM 51-72-10, INSTALLED NEW SHEAR PLATE IAW SRM 51-72-10 AND 51-40-21.