What was found
***WHILE AIRCRAFT WAS IN FOR HEAVY CHECK *** MAINTENANCE REPORTED LEVEL 2 CORROSION IN THE AFT WET AREA, RH SHEAR PANEL SPLICE PLATE AT FR87-FR88. MAINTENANCE REMOVED AND REPLACED THE AFT WET AREA, RH SHEAR PANEL SPLICE PLATE AT FR87-FR88 IAW E170 SRM 51-40-08, 51-75-16, 53-23-06 AND 51-40-02. AIRCRAFT IS CURRENTLY STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.