As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AWR; HIDDEN CORROSION: [ DURING REMOTION OF BEAM 280 RELATED WITH NRC 00343 ]: CORROSION ON BULKHEAD WEB IN STA. FS= 280 BETWEEN 11RBL TO 14 RBL AT PAX CABIN FWD WET AREA. (W1) (CPAX) [ TASK R53520 STEP 7 ] TCI 53-10-219
CORROSION LEVEL 2. BULKHEAD WEB IN STA. FS= 280 BETWEEN 11RBL TO 46RBL AT PAX CABIN FWD WET AREA WAS REPAIRED PER CRJ900 SRM 53-11-10-201-004-A01