What was found
MAIN CARGO DECK SEAT TRACK EVIDENCE OF CORROSION ON UPPER SURFACE AT NUMEROUS LOCATIONS BS915 TO BS 1080 LBL 24.5 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 DEPTH = 0.060". FLOOR BEAM UPPER CHORDS REPLACED IAW BOEING DWG #111N5201, 144N8017, 143N5470 AND SRM 51-40-02 REV 125. BS 900 TO BS 1080 LBL 24.5