As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB THE FLIGHT CREW GOT A WING A/ICE FAIL MESSAGE IN ICING CONDITIONS. AIRCRAFT MADE A RETURN FLIGHT TO IAD. MAINTENANCE INSPECTED AND FOUND A LOOSE DUCT. THE DUCT WAS RE-SECURED. ANTI-ICE SYSTEM OPS CHECK WAS PERFORMED AND SYSTEM OPS CHECKED GOOD.