Narrative:

Captain and I [deadheaded] to ZZZ to pick up a 737-800 to ferry back to ZZZ1 due to a loss of system a hydraulic fluid. Preflight showed no leaks and everything ok with the aircraft. I was pm and upon takeoff the master caution light came on for engine driven hydraulic pump for system a. The light went out and continued. Abeam ZZZ2 the master caution came back on for engine driven hydraulic pump number 1 system a. I pulled out the QRH and ran the hydraulic pump low pressure checklist which had us turn the pump switch off. With quantity and pressure still good using the electric pump we decided to continue to ZZZ1. Maintenance techs on the aircraft agreed with the decision. Soon after passing zzzzz intersection the number 1 engine oil filter bypass indication on the upper engine mfd illuminated. I pulled out the QRH and we decided to request a lower altitude since we knew we could not maintain level flight with one engine at idle. We asked for a descent to fl 200 and told them we were working on a problem with our left engine. Since the oil filter bypass indication remained illuminated the next step per the QRH was to shut the engine down. As a result we had to land at the nearest suitable airport. We decided that ZZZ3 was the best choice since it was close the weather was good and we were both familiar with the airport. I continued with the checklist as [the captain] flew the aircraft; [requested priority handling]; and requested the diversion. We were cleared direct to the airport and a descent to fl 70. Shutdown and descent proceeded normally with me accomplishing the shutdown and [the captain] continuing to fly and maintain communication with ATC. We then moved to the one engine inoperative and landing checklist which included calculating single engine landing distance. Hydraulic system a at this point had gone down to 25 percent. We prepared for the possibility of losing total system a pressure and a manual gear extension but was not a factor as the gear operated normally; [the captain] performed a visual approach and landing with a safe landing in ZZZ3. We then sent a message to dispatch via ACARS that we were safe on the ground.

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Original NASA ASRS Text

Title: B737 flight crew reported inflight shut down and diversion due to hydraulic system failure.

Narrative: Captain and I [deadheaded] to ZZZ to pick up a 737-800 to ferry back to ZZZ1 due to a loss of system A hydraulic fluid. Preflight showed no leaks and everything ok with the aircraft. I was PM and upon takeoff the Master Caution light came on for engine driven hydraulic pump for system A. The light went out and continued. Abeam ZZZ2 the master caution came back on for engine driven hydraulic pump number 1 system A. I pulled out the QRH and ran the Hydraulic Pump Low Pressure checklist which had us turn the pump switch off. With quantity and pressure still good using the electric pump we decided to continue to ZZZ1. Maintenance techs on the aircraft agreed with the decision. Soon after passing ZZZZZ intersection the number 1 Engine Oil Filter Bypass indication on the upper engine MFD illuminated. I pulled out the QRH and we decided to request a lower altitude since we knew we could not maintain level flight with one engine at idle. We asked for a descent to FL 200 and told them we were working on a problem with our left engine. Since the OIL FILTER BYPASS indication remained illuminated the next step per the QRH was to shut the engine down. As a result we had to land at the nearest suitable airport. We decided that ZZZ3 was the best choice since it was close the weather was good and we were both familiar with the airport. I continued with the checklist as [the Captain] flew the aircraft; [requested priority handling]; and requested the diversion. We were cleared direct to the airport and a descent to FL 70. Shutdown and descent proceeded normally with me accomplishing the shutdown and [the Captain] continuing to fly and maintain communication with ATC. We then moved to the one engine inoperative and landing checklist which included calculating single engine landing distance. Hydraulic system A at this point had gone down to 25 percent. We prepared for the possibility of losing total system A pressure and a manual gear extension but was not a factor as the gear operated normally; [the Captain] performed a visual approach and landing with a safe landing in ZZZ3. We then sent a message to dispatch via ACARS that we were safe on the ground.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.