As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUSELAGE FS409+128 LBL18 INBD VERTICAL POST HAS AN INDICATION .2" LONG BY 50% FSH IN THE AFT RADIUS AT WL69. FAILED NDT INSPECTION. (C-CHECK- RO 11/11/21) REMOVED AND REPLACED VERTICAL POST ASSY AT FS 409+128 LBL 18 WITH NEW IAW CRJ 200 SRM 51-42-02, 51-42-26, AND BOMBARDIER REO 601R-53-41-889 REV -D DATED 2018-10-04. COMPLETED TASK CARD 51-900-1003-SKY AND ATTACHED COMPLETED FORM 337. NO WEIGHT CHANGE NOTED.