As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT ENGINE ANTI-ICE VALVE PROBLEM. ANTI-ICE VALVE AND CONTROLLER WERE REPLACED AT JFK, JULY 18. NO FURTHER WRITE-UPS. SHOP PERFORMED INCOMING TEST & CONFIRMED THAT EAI VALVE DID FAIL. VALVE ASSY LARGE PISTON RING INSIDE DIAMETER COATING WAS FOUND WORN TO BASE METAL. NOTE: OUR RECORDS DO NOT SHOW THAT THIS VALVE HAS EVER BEEN REPLACED BEFORE.