As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6499 - IAD-ROA - DURING TAXI, EXPERIENCED A DISCREPANCY WITH THE CCT NR 2 A/F DE-ICE FAULT ILLUMINATING WITH THE SYSTEM TURNED OFF. AIRCRAFT RETURNED TO GATE WHERE MAINTENANCE CONTROL AND MAINTENANCE WAS NOTIFIED. MAINTENANCE REMOVED AND REPLACED THE PRESSURE SWITCH FOR THE NR 2 CCT SYSTEM IAW MAINTENANCE PROCEDURES. ALL CHECKS WERE ACCOMPLISHED AS OUTLINED IN THE MM. AIRCRAFT WAS THEN RELEASED FOR SERVICE. (M)