Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Workload; Time Pressure; Troubleshooting
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Landed As Precaution; Flight Crew Overcame Equipment Problem; General Flight Cancelled / Delayed; General Maintenance Action
Aircraft
Approximately 4 hours prior to landing EICAS MSG HYD QTY LOW 1. Fault light also illuminated. Hydraulic quantity slowly depleted over the next hour to zero; however pressure and temp was normal. Conferred multiple times with dispatch Maintenance Control and Duty Pilot about possible tow in in ZZZ if needed. After 50 more minutes with a zero quantity reading EICAS MSG  had PRESS ENG 1. Engine one pressure light also illuminated. Followed QRH and continued with engine pump off. ZZZ OPS and ATC arranged for runway XX for our arrival in the event we might require a tow off. During descent when selecting flaps 5 EICAS HYD PRESS system 1 followed QRH; notified ZZZ and ZZZ OPS that a tow off would be required. ZZZ ATC at that point stated they were going to use priority handling on our behalf; we did not request one; and we provided souls on board and fuel remaining. We continued flap and alternate gear extension and proceeded with a visual approach and landing to runway XX; followed by a tow to gate. Runway was closed for approximately 11 minutes.Crew worked great together and we were well prepared for the system loss and reviewed everything ahead of time. Speculation regarding ATC wanting us in an emergency status is it's most likely a local procedure addressing a planned runway closure and airport assistance required for the tow in. ZZZ currently had runway YYR closed so our planned closure left the airport with a single runway.
Captain reported multiple hydraulic system failures on descent. ATC assigned priority handling; allowing the flight to continue the approach and precautionary landing.