As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN AVIONICS BAY STR 20L HAS MULTIPLE SPOTS OF CORROSION BETWEEN FS349.00 AND FS379.00 (C-CHECK RO 6/22/2021) REMOVED AND REPLACED CORRODED STRINGER 20L BETWEEN FS349 - FS379. REF CRJ900 SRM 51-42-06-001-001-A01, REF CRJ900 SRM 51-42-21-001-001-A01, REO 690-53-21-1360 REV A, DATED: 2021-05-15 AND DWG SH670-31401 REV A. COMPLIED WITH TASK CARD 51-900-1002-SKY. NO LEAKS NOTED,