As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD CARGO BAY LH TRANSISION HAS CORROSION FROM FS 500F TO 500J. GROUNDED - YES. BLENDED CORROSION, FOUND TO BE OUT OF LIMITS IAW B737-900 SRM 53-00-53-1A-2. REPAIRED TRANSITION IAW B737-900 SRM 53-00-53-2R-5.W= 1.2 O= .040 R= 0.00 L= 4.00 D= .040.