As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD/IAD - FLT 287 - AIR RETURN, LEFT ENGINE DRIVEN HYDRAULIC PUMP FAILED AFTER TAKEOFF. ABNORMAL PROCEDURES FOLLOWED. REPLACED LEFT ENGINE DRIVEN HYDRAULIC PUMP PER MM 29-10-05. OPERATIONAL AND LEAK CHECK OK. SERVICED HYDRAULIC SYSTEM.