As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 281 - JFK - AIR TURN BACK, AFTER TAKEOFF NR 1 CSD TEMPERATURE HIGH RISE OUT ALSO HIGH. NR 4 CSD ALREADY PLACARDED. REPLACED NR 1 CSD OUT TEMPERATURE BULB OPERATIONAL CHECK OK. RECONNECTED NR 4 CSD, CLEANED AND SECURED MAIN DISCONNECT CANNON PLUG. OPERATIONAL CHECK OK. (M)