Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Less Severe
Flight Crew Landed As Precaution; Flight Crew Returned To Departure Airport; General Declared Emergency
Aircraft
During cruise; ECAM alerted crew to System Yellow Low Hydraulic Pressure. Proceeded with ECAM/QRH/follow up Standard Operating Procedures. Consulted with Dispatch/Maintenance via airphone. All agreed best action return to departure airport. Declared emergency with ATC. Returned for [an] uneventful landing.  Mechanical failure of Yellow Hydraulic System.
A320 Captain experiences the loss of the Yellow Hydraulic System pressure during cruise flight. ECAM procedures are complied with and after consulting with Maintenance Control; the flight returns to the departure airport.