What was found
MAIN CABIN FLOOR SUPPORT AT STA.312 HAS CORROSION AT APPROX.BL 0. GROUNDED - YES. REMOVED THE PREVIEUS REPAIR STRAP IAW B737-800 SRM 51-40-02 LOCATED AND DRILLED THE NEW STRAP IAW B737-800 SRM 53-10-51-2R-15 REPAIR 15 INSTALLED THE STRAP IAW B737-800 SRM 52-10-51-2R-15 REPAIR 15 APPLIED ALODINE TO THE STRAP AND AREA IAW B737-800 AMM 51-21-41 PRIMED THE STRAP AND AREA IAW B737-800 AMM 51-21-72.