As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FL 350 HYD SYS 1 OVERHEAT FAULT LIGHT ILLUMINATED. RETURNED TO RDU. REMOVED AND REPLACED NR 1 HYDRAULIC SYSTEM RETURN FILTER IAW AMM 29-13-05 AND NR 1 ENGINE SYSTEM 1 AND 2 PUMPS IAW AMM 29-11-01 AND NR 2 ENGINE SYSTEM 1 HYD PUMP IAW AMM 29-11-01. PERFORMED GROUND RUN LEAK CHECK AND OPS CHECK IAW AMM 71-00-00, OPS CHECK GOOD.