As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INTERCOSTAL AT STRGR 20L CORRODED FROM F.S. 333.00 TO 349.00 (C-CHECK) RO 3/10/2021 FOUND STR 20L AT F.S 333.00-349.00 TO BE OUT OF LIMITS IAW CRJ 700 SRM 53-21-23-101-001-A01. REMOVED .015 MATERIAL ORIGINAL THICKNESS .050 FOUND REMIAING THICKNESS TO BE .035. REMOVED AND REPLACED INTERCOSTAL AT F.S 333.00 TO F.S 349.00 AT STRINGER 20L IAW CRJ 700 SRM 51-42-06-001-001-A01