As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED A RIGHT HAND ANTI ICE DUCT FAIL RED MASTER WARNING ON TAKEOFF. CREW ELECTED TO RETURN TO GNV AND LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED OPERATIONAL CHECKS OF THE WING ANTI ICE AND CONTROL INDICATION SYSTEM ALONG WITH THE BLEED AIR LEAK CONTROL UNIT AND ICE DETECTION SYSTEMS. MAINTENANCE REMOVED AND REPLACED THE PRESSURE SWITCH IN ACCORDANCE WITH THE AIRCRAFT MAINTENANCE MANUAL. AIRCRAFT WAS RELEASED FOR SERVICE.