What was found
EVIDENCE OF CORROSION ON SEAT TRACK UPPER SURFACE INBOARD AND OUTBOARD FLANGES BS 900 TO BS 1080 AT RBL 45.5 NUMEROUS LOCATIONS. CORROSION REMOVED IAW SRM 51-10-02 REV 125 AND FOUND TO BE OUTSIDE LIMITS IAW SRM 53-00-51-1A DETAIL III REV 125, NOMINAL THICKNESS OF UPPER CHORD = 0.090" MAX ALLOWABLE BLEND = 10% 0.009" ACTUAL MAX BLEND = 0.076". FLOORBEAM UPPER CHORD REPLACED IAW DWG 111N5201, 143N5470, 144N8017 AND SRM 51-40-02 REV 125 BS 900 T0 BS 1080 RBL 45.5.