Commercial Fixed Wing
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Confusion; Distraction
Aircraft Equipment Problem Less Severe
Flight Crew Landed in Emergency Condition
Aircraft; Company Policy; Procedure
I was PM; and approximately an hour into the flight at cruise FL 380; I performed my systems check and discovered that Green System Hydraulic fluid quantity gauge was indicating just above minimum level. Approximately hour later; we got an ECAM directing us to turn off the Green Engine 1 Driven Hydraulic pump and to also; turn off the PTU which resulted in a loss of the Green System. At this point; we were on the Arrival and within 20 minutes from landing at our destination ZZZ. We decided that the safest course of action was to [request priority handling] due to the fact that I was flying with a new Captain with less than 100 hours. I performed a non normal landing assessment and reviewed the manual gear extension procedure. We had an uneventful landing; with emergency equipment standing by. The Captain managed to use asymmetrical thrust to clear the active runway because; we had no nose wheel steering. He then set the parking brake [and] shut the engines down.
Air carrier pilot reported losing the green hydraulic system while on arrival.