What was found
IAD-ATL - FLT 175 - FLIGHT EXPERIENCED A LT SYSTEM HYDRAULIC LOW PRESSURE LIGHT, 300 PSI AFTER PERFORMING THE GEAR UPLATCH CHECK. FLIGHT RETURNED TO IAD FOR REPAIRS. REMOVED AND REPLACED HYDRAULIC PUMP NR 1 ENGINE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
IAD-ATL - FLT 175 - FLIGHT EXPERIENCED A LT SYSTEM HYDRAULIC LOW PRESSURE LIGHT, 300 PSI AFTER PERFORMING THE GEAR UPLATCH CHECK. FLIGHT RETURNED TO IAD FOR REPAIRS. REMOVED AND REPLACED HYDRAULIC PUMP NR 1 ENGINE.