As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FO'S WINDSHIELD WAS ARCING ON DECENT WITH SWITCH SET LOW / DEFERRED R WINDSHIELD HEAT PER MEL 30-41-1 CAT C M/FC C/W BY COLLARING CBP2- G13, A10, A11 AND TESTING LH WINDOW HEAT SYSTEM. REMOVED AND REPLACED FO WINDSHIELD IAW CRJ 900 AMM 56-11-01-000/400-801-A01-PSA.