What was found
MAIN CABIN FLOOR BEAM PRESSURE WEB AT STA 986 HAS DRILL START. GROUNDED - YES. WEB HAS DRILL START, DOUBLE DRILLED HOLE , AND CORROSION BLENDOUT. ORIGINAL THICKNESS 0.020 IAW BACDWG 147A5712 REVB. REMAINING THICKNESS 0.005, REMOVED 0.015 OUT OF LIMITS IAW B737-800 SRM 53-70-51-1A-1. REMOVED WEB STA 986-1016 LBL 32-LBL45 IAW B737-800 SRM 51-40-02. DRILLED TO FIT NEW WEB IAW B737-800 SRM 51-40-05 AND BAC DWG 147A5700 REV A. INSTALLED NEW WEB IAW B737-800 SRM 51-40-02 AND BAC DWG 147A5700 REV A.