As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT 3554, CREW REPORTED GREEN HYDRAULIC HIGH TEMP LIGHT INFLIGHT TO CVG. AIR RETURN TO MEM. MAINTENANCE REMOVED AND REPLACED GREEN SYSTEM TEMPERATURE SWITCH PN HE83273-1, SN/ON 1304TW, OFF/1358TW. IAW S9-33-11-201. RAN ENGINES AT OR ABOVE 72 PERCENT- N1, NO HI TEMP. CYCLED ROLL SPOILERS AND AIR BRAKE STILL NO HI-TEMP LIGHT AFTER 25 MINUTES. ALL SYSTEMS CHECK GOOD. OK FOR SERVICE.