As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 4959 - JFK-BWI - DURING CLIMB-OUT, THE RIGHT INTAKE HEAT FAILED. DUE TO EXISTING WEATHER CONDITIONS, THE AIRCRAFT RETURNED TO JFK AND LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS FERRIED TO PSM FOR REPAIRS. MAINTENANCE REMOVED AND REPLACED THE THERMAL CONTROLLER AND THE SYSTEM OPS CHECKED GOOD. AIRCRAFT WAS RETURNED TO SERVICE. (M)