As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LH WING INBD FLAP OTBD HINGE BOX HAS CHAFFING AT GUIDE (MARKED) (C-CHECK) RO 2/14/2020 BLENDED LH WING INBD FLAP OTBD HINGE BOX GUIDE OUT OF LIMITS REF CRJ900 SRM. REPLACED GUIDE REF BOMBARDIER DRAWING, CRJ900 SRM, AND CRJ900 SRM. SEE CONTINUE CARD FOR DETAILS.