What was found
FLOOR BEAM 986.5 APPROXIMATELY 4" FROM R/H INNER CHORD HAS CORROSION AROUND FASTENER HOLE. GROUNDED - YES. BLEND AND FOUND EDGE OF FASTENER HOLE TOO LARGE AMOUNT OF DAMAGE, ORIGINAL MATERIAL .150 MATERIAL REMOVED .072 REMAINING MATERIAL .078 FOUND TO BE OUT OF LIMIT IAW B737-800 SRM 53-70-15-1A-1, REMOVED T-CHORD RBL 7.9+10 RBL 54 IAW B737-800 SRM 53-70-51-2R-4 REPAIR 4, FABRICATED & LOCATED AND DRILLED. INSTALLED NEW T-CHORD IAW B737-800 SRM 53-20-51-2R-4 REPAIR 4.