What was found
DURING HEAVY CHECK, AFT WET AREA CENTER FUSELAGE III CROSSBEAM (SHEAR PANEL) HAS CORROSION AS MARKED FRAME 87-88. REMOVED AND REPLACED CENTER SHEAR PANEL FR 87-88 REF SRM 51-42-01. RESTORED SURFACE FINISH REF E175 SRM 51-23-05, 51-23-06. AIRCRAFT REMAINS IN HEAVY CHECK BNA.