As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DD5 FWD INTERCOSTAL HAS MULTIPLE AREAS OF CORROSION (C-CHECK RO 9/8/2021) REMOVED AND REPLACED DD5 FWD INTERCOSTAL REF. CRJ-900 SRM, 51-42-06-001-001-A01 AND DWG 601R31702 REV -N. COMPLIED WITH TASK CARD 51-900-1002-SKY, PRESSURE CHECK GOOD. SEE CONTINUE CARD FOR FURTHER DETAILS.