As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RTFL DUE TO GREEN HYDRAULIC SYSTEM FAILURE. GEAR WAS MANUALLY EXTENDED. REPLACED NR 1 ENGINE HYDRAULIC PUMP, AND NR 1 ENGINE HYDRAULIC PUMP CASE DRAIN FILTER PRECAUTIONARY. LEAK WAS DETERMINED TO BE CAUSED BY A CHECK VALVE PACKING IN THE NR 1 ENGINE PYLON. REPLACED O-RING. LEAK CHECKED GOOD. NFF ON PUMP BY THE SHOP.