What was found
LAX - EMERGENCY LANDING - FLT 0364 - EN ROUTE FROM IAD TO LAX RECEIVED ECAM MESSAGE NR 1 ENGINE GREEN HYDRAULIC PUMP LOW PRESSURE AND GREEN HYDRAULIC SYSTEM LOW PRESSURE, AS A PRECAUTION DECLARED EMERGENCY. MAINTENANCE FOUND NR 1 ENGINE GREEN HYDRAULIC PUMP PRESSURE SWITCH CRACKED AT WELD, REMOVED AND REPLACED PRESSURE SWITCH IAW AMM 29-11-17. DUE TO FLUID LOSS REPLACED NR 1 ENGINE DRIVEN HYDRAULIC PUMP IAW AMM 29-11-51-04, AND NR 1 ENGINE CASE DRAIN FILTER IAW AMM 29-11-43-03; LEAK AND OPERATIONAL CHECKS WERE GOOD. PART INFORMATION HAS BEEN ADDED TO THIS SDR.