As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT WET O/B SHEAR WEB AT STA 847 TO 905 HAS CORROSION AT RBL 60. GROUNDED - YES. UPON FURTHER EVALUATION FOUND TO HAVE NO ALLOWABLE LIMITS, REPLACED AFT WET O/B SHEAR WEB AT STA 847 TO 905 AND RBL 60 IAW B737-700 SRM 51-40-02-0G-0W=1.25 O=.071 R=.058 L= 2.25 D=.013.