What was found
AFT FUSELAGE WET AREA FR87-88 CENTER SHEAR PANEL HAS SEVERAL AREAS OF DEEP CORROSION. REMOVED AND REPLACED SHEAR PANEL REF. SRM 51-40-08. RESTORED SURFACE PROTECTION REF. SRM 51-23-04, 51-23-05, AND 51-23-06. SEE W/O H6609 SN 572 FOR WORK DETAILS. AIRCRAFT REMAINS IN HEAVY CHECK BNA.