As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION UNDER PANEL 621BR AT INBOARD BOTTOM FLANGE AROUND FASTENER HOLES. WS45. REMOVED CORROSION AT R/H WS45 ON AREA OF WING UNDER ACCESS PANEL 621BR INBOARD BOTTOM FLANGE AROUND FASTENER HOLES AND CREATED GRID FOR NDT TO DETERMINE MATERIAL THICKNESS IAW CRJ 900 SRM 51-21-06-001-001-A01. COMPLIED WITH REO 690-57-41-472, REV—,REV DATE 2025/03/11