What was found
B757-53-3-0557 RH CREASE BEAM INNER CHORD HAS CORROSION ON UPPER SURFACE,LEADING UNDER DRAIN PAN,FROM STA 730-STA 740.(96-86) RE F. ST. ENGINEERING N/R 0087599 FOUND CORROSION REMOVAL OUT OF LIMITS ON CABIN CREASE BEAM INNER CHORD AT STA 730-740 RBL 60,L=6.0 W=1.10,D=.014 IAW B757-300 SR M 53-30-15-A1 FIG. 101.REMOVED AND INSTALLED NEW P/N 143N8328U54 BETWEEN STA 666 TO 754 RBL 60 IAW B757-300 SRM 51-40-02 AND DWG 143N8322 WORK ACCOMPLISHED BY MECH V919728 AND INSPECTED BY V919676