As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB THE RT ENGINE COWL ANTI-ICE CAUTION MESSAGE ILLUMINATED. THE CREW FOLLOWED THE QRH AND RETURNED TO PHL. MAINTENANCE REMOVED AND REPLACED THE RT COWL ANTI-ICE VALVE WITH A SERVICEABLE UNIT. THE SYSTEM LEAK AND OPERATIONALLY CHECK GOOD. THE AIRCRAFT WAS RELEASED FOR SERVICE.