As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT PIT LH TRANSITION PANEL HAS AREAS OF CORROSION STA 727B TO 810. GROUNDED - YES. DAMAGE FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-00-53-1A-2 REPAIRED TRANSITION PANEL IAW B737-900ER SRM 53-00-53-2R-6 W=3 O=.040 R=.033 L=10 D=.007