As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD CARGO AFT BULK'HD LOWER SUPPORT AT STA. 500K CORRODED ALONG ITS LENGTH STR. 25L TO 25R.(PREVIOUSLY BLENDED). GROUNDED - YES. REMOVED CORROSION OF FWD CARGO AFT BULK'HD LOWER SUPPORT AND FOUND TO BE OUR OF LIMITS I.A.W. B737-900ER SRM 53-00-53-1A-2. REMOVED SUPPORT AND REPLACED WITH NEW SUPPORT IAW 737-900ER SRM 51-40-02-0G-0 W 1.5" O .080" R .066" L 8.0" D .014".