As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON INTERCOSTAL DD4 AFT (C CHECK RO 02-03-22) CORROSION ON PAX DOOR AFT DD4 INTERCOASTAL FOUND TO BE OUT OF LIMITS. REPLACED INTERCOSTAL REF CRJ-700 SRM 51-42-06-001-001-A01 AND DWG: 601R31702 REV N. COMPLIED WITH TASK CARD 51-900-1002-SKY. PRESSURE CHECK GOOD.