What was found
MAIN CABIN AFT WET AREA STA 986.5 FLOOR BEAM AT RBL43 HAS CORROSION AT FASTENER HOLE. GROUNDED - YES. REMOVED CORROSION.ORIGINAL THICKNESS 0.150 IAW B737-800 SRM 53-70-51-0I-1.REMAINING THICKNESS 0.90.REMOVED 0.060.OUT OF LIMITS IAW B737-800 SRM 53-70-51-1A-1.CUT OUT DAMAGE AND FABRICATED REPAIR STRAP, ANGLE, AND FILLER IAW B737-800 SRM 53-70-51-2R-6,ALTENATIVE 4.ALODINED IAW B737-800 SRM 51-20-01, PRIMED IAW BOEING SOPM 20-41-02.INSTALLED REPAIR STRAP , ANGLE AND FILLER IAW B737-800 SRM 53-70-51-2R-6 ALTERNATIVE 4.