B737 flight crew reported a master caution light annunciation and noticed the hydraulic engine pump light flickering and the hydraulic quantity was low. They diverted to the most convenient airport.
Synopsis
B737 flight crew reported a master caution light annunciation and noticed the hydraulic engine pump light flickering and the hydraulic quantity was low. They diverted to the most convenient airport.
Narrative
Right at top of descent; I notice a flickering HYD" (Hydraulic) master caution light annunciation. I looked up to the hydraulic pumps and saw the "A" HYD ENG (Engine) pump light flickering as well. I quickly switch the bottom MFD (Multi-function Flight Display) from Engine to Hydraulics and saw the A system quantity rapidly dropping. I directed my FO (First Officer) to reference the QRH and we immediately shut the system A ENG and HYD pumps off. Unfortunately; the quantity was already at 17% and shutting the pumps off; did little to stop the drop. We immediately advised ATC and asked for holding while we finished the QRH and contacted dispatch and Maintenance Control. I suggested and we all agreed that diverting to ZZZ [airport] was in our best interests due to low ceiling and rain at ZZZ1 but VMC and dry runway at ZZZ; as well as better facilities and maintenance at ZZZ. We were literally 150 miles from both airports. I briefed the flight attendants as well as explained to the passengers what was going on and why we were going to ZZZ instead of ZZZ1; and then we headed directly to ZZZ. Upon arrival into ZZZ; we had to manually configure the landing gear; so we opted to do so a little early to ensure we had enough time to fully configure so as to not need a go around because with manual gear extension; once it's down; it's down for good. We finished all appropriate deferred items on the checklist and approach and landing were both uneventful on runway XXC at ZZZ. Outside of sluggish controls and left thrust reverser not working correctly; we landed safely and taxied to the gate. ATC on all levels from ZZZ center; approach; tower and ground were all extremely helpful and cleared the way for us which greatly reduced our stress and allowed us to focus on flying the jet safely while running all appropriate checklists."
Second reporter narrative
During cruise; just prior to descent into ZZZ1 [airport]; the captain noticed the hydraulic light flicker. He checked the hydraulic system; and we saw the quantity was decreasing; and the pressure was holding steady. As we assist the situation; The quantity continued to decrease and eventually the pressure decreased as well. The captain advised ATC; and we pulled out the checklist. At this point; we requested to enter holding; while we coordinated with dispatch and Maintenance Control. It was agreed that we should divert to ZZZ due to weather in ZZZ1 and maintenance support in ZZZ. We ran the checklist and complied with all the steps. During the divert to ZZZ; we elected to configure early since we would have to do a manual gear extension. Configuration was uneventful; and the landing was uneventful. The captain did comment that the controls felt sluggish with only one hydraulic system. Crash fire and rescue was on scene when we landed and after coordination with maintenance in ZZZ; we taxi back to the gate. Crash fire and rescue escorted us back to the gate and we shut down uneventfully.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.