B737-800
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Flight Crew Total 20000
Troubleshooting
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Weight And Balance; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Landed in Emergency Condition; Flight Crew Diverted; General Maintenance Action
Aircraft
Enroute [from] ZZZ; [we] received Master Caution light at 36;000 feet for System A Engine Driven Hydraulic Pump. [We] executed QRH procedure then noticed quantity in System A was zero without the expected additional caution lights.Executed phone patch to Dispatch and Maintenance on ARINC. Maintenance expressed concern about running electric pump with a zero quantity indication.[We requested priority and] diverted to nearby to ZZZ1. [We] checked overweight landing app and hydraulic loss landing chart. [We] tried lowering landing gear early resulting in total loss of System A including expected low pressure lights. [We] conducted second Hydraulic QRH procedure for total loss of System A and integrated 737 qualified jumpseater in Manual Gear Extension procedure. Landed Runway XX at ZZZ1. ARFF personnel inspected aircraft and revealed tire damage and leaking hydraulic fluid. [We] had gear chocked and pinned. Passengers deplaned by [read] door and escorted by AARF to terminal on foot. [We] turned aircraft over to local Maintenance and contacted ZZZ Chief Pilot.It seems the #3 tire shredded and caused System A hydraulics to leak. Tire shred was unknown until after landing.Loss of System A QRH procedure starts with three low pressure annunciator indications; but we only had one of these; initially causing speculation whether this was the correct procedure to apply or not.
[Report narrative contained no additional information.]
Boeing 737-800 flight crew reported the complete loss of System A hydraulic fluid after a supply line was damaged by a tire failure.