What was found
MAIN CABIN STA.365 BETWEEN RBL.15 - RBL.47 CORROSION ON FLOOR BEAM T CHORD. UPON FURTHER EVALUATION FOUND CORR. ON "T" CHORD STA.365 RBL.15 - RBL.47 TO BE OUT OF LIMITS DUE TO CORR. BEING ON EXISTING REPAIR. REMOVED AND REPLACED "T" CHORD SECTION OF EXISTING REPAIR IAW B757 SRM 53-00-51-2R REP.8. REMOVED & RE- INSTALLED REPAIR STRAPS & ANGLES IAW B757 SRM 53 INSTALLED REPAIR STRAPS & ANGLES IAW B757 SRM 53-00-51-2R REPAIR 8.