As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE NR 1 LOW PRESSURE HYDRAULIC LIGHT ILLUMINATED AFTER TAKEOFF. PRESSURE AND QUANTITY INDICATED NORMAL. REMOVED AND REPLACED NR 1 ENG DRIVEN PUMP PER AMM 29-11-11-400-802-002. LEAK CHECK AND OPS CHECK GOOD. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1441779 SN OFF 07050 PUMP, HYD ENG D OFF 29-2910-9-0003 7050 ON 29-2910-9-0003 8669.