As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"INITIAL INSPECTION. CORROSION ON INTERCOSTAL DD6 BETWEEN FS= 311 FS= 347 AT MAIN PASSENGER DOOR. (L1) (PTAS) (TCI: 52-10-301). "SUMMARY OF NRC 00101: INTERCOSTAL DD6 ( P/N 601R318057-1 ) WAS REPLACED PER CRJ-900 SRM 51-42-06-001-001-A01 PAR. 6 . C AND SRM 51-42-21-001-001-A01 PAR, 6. C