As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO LH TRANSITION ANGLE IS CORRODED FROM FS 727C TO 727I. GROUNDED - YES. REMOVED CORROSION AND IS OUT OF LIMITS IAW 737-900ER SRM 53-00-53-1A-2 REPAIR ACCOMPLISHED ON MIG 5 OK389082 AAR W/O# 1022511 1000-0022W=1" O=.040" R=0 L=15" D=.040".