As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DRILL UP OF INBD FLAP NEW OUT BOARD VANE CAP AT FLAP STA. 147.50 TECH HAS INADVERTANTLY DOUBLE DRILLED A FASTENER HOLE IN THE VANE SKIN ATTACHMENT RIB. RIB REQUIRES REPLACEMENT. (C-CHECK) RO 12/14/2019 REMOVED, FABRICATED AND REPLACED RH IB FLAP VANE OB RIBLET END CAP IAW CRJ 200 SRM. FORM 377, SDR, AND MAJOR REPAIR TASK COMPLETE AND ATTACHED. NO WEIGHT CHANGE, WAS A PART FOR PART REPLACEMENT