What was found
UPON PERFORMING AN ANNUAL INSPECTION, THE PILOT AND CO-PILOT INTERIOR KICK PANELS WERE REMOVED. CORROSION WAS DISCOVERED BETWEEN THE SOUNDPROOFING POLYMERIC SHEETS AND THE SKIN, WHERE AS THE AREA AROUND THESE ITEMS WAS NOT SUBJECT TO CORROSION. THE MATERIAL OF THE SHEETS THEMSELVES, OR THE ADHESIVE UTILIZED IN THEIR INSTALLATION, IS THE SUSPECTED CAUSE FOR EITHER CAUSING THE CORROSION THEMSELVES, OR ALLOWING FOR THE ACCUMULATION OF MOISTURE.