What was found
DURING MAINTENANCE INSPECTIONS AT IAI, THE CORROSION DAMAGE WAS FOUND ON THE UPPER AFT SKIN (111T3017-1) OF CENTER WING WHEN EXCEEDS UNDER THE TENSION FITTING (100T1432-3). THE CORROSION ON THE UPPER SURFACE OF THE SKIN WAS BLENDED OUT PER SRM 51-10-02. THE MAXIMUM THICKNESS LOSS OF 0.089" WAS DETECTED, EXCEEDS THE ALLOWABLE DAMAGE LIMIT PER SRM 57-10-01. THE BLENDED AREA IS ABOUT 5.0" X 2.0". THE DATUM SKIN IN MADE OF 7150-T651 X 0.750" THICK, MACHINED TO 0.156" MIN