What was found
CORROSION ON SEAT TRACK UPPER FLANGES BS 1080-1180 RBL 45.5 MAIN CARGO DECK. REMOVED CORROSION IAW SRM 51-10-02 REV 125. MEASURED AND EVALUATED BLENDS IAW SRM 53-00-52-1A DETAIL VII AND VIII REV 125 AND FOUND TO BE OUT OF LIMITS AT SEVERAL LOCATIONS. NOMINAL THICKNESS=0.085" MAX ALLOWABLE BLEND (20%)=0.017" MAX DEPTH OF BLEND=0.060". DRILLED UP AND INSTALLED NEW SEAT TRACK IAW SRM 51-40-02 REV 125 AND DRAWING 144N5001 SHEET 3 REV A.