What was found
AFT WET AREA. THE 947.5 BEAM HAS SEVERAL AREAS OF CORROSION FROM BL R12 TO BL L12. GROUNDED - YES. REMOVED CORROSION FROM THE AFT WET AREA 947.5 BEAM AND BEAM WAS FOUND TO BE OUT OF LIMITS FROM BUTTLINE 12R TO BUTTLINE 12L IAW B737-800 SRM 53-70-51-1A-1. PERFORMED REPAIR ALTERNATIVE 2 ON THE UPPER FLANGE OF THE T-CHORD BETWEEN BL 12L AND BL 12R IAW B737-800 SRM 53-70-51-2R-5. W= .75" O= .180 R= .120" L= 1.50" D= .060".