What was found
MEX - FLT 0789 - FLIGHT CREW RECEIVED HYDRAULIC A-SYSTEM LOW QUANTITY INDICATION WHILE EN ROUTE FROM IAH TO ACA. THE AIRCRAFT WAS DIVERTED TO MEX WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE A-HYDRAULIC SYSTEM ELECTRIC MOTOR DRIVEN PUMP ACOUSTIC FILTER LEAKING. THE FILTER AND PACKING WERE REMOVED AND REPLACED. THE HYDRAULIC SYSTEM WAS SERVICED AND LEAK CHECKS WERE GOOD. (X)