Narrative:

Approximately 60 miles northeast of ZZZ we started seeing an intermittent master caution indication with no abnormal overhead annunciation. We tried the recall; but it did not illuminate anything overhead so we began checking other systems when the captain displayed the hydraulic quantity indicator; which read approximately 19 percent on the 'a' side. He then gave me the radios (I was the pilot flying) and attempted to contact dispatch to see if they would like us to divert to ZZZ. Shortly during this difficult contact procedure (communication issues with dispatch); the master caution light and the 'a' engine driven hydraulic pump light illuminated. We ran the QRH hydraulic pump low pressure checklist and turned off the 'a' pump. Dispatch finally advised us to go to ZZZ and we were then given direct to the airport along with a descent from ATC. I began using the speedbrakes to help the descent and we noticed the quantity getting lower so we decided to review the loss of 'a' procedure and also agreed to use flaps 15 for landing. Captain received the flaps 15 numbers; we then reviewed the approach and ran the descent and approach checklist. We were cleared direct zzzzz for the ILS xxl. Approach informed us they had fire and rescue waiting. We decided to drop the gear early when the nose gear failed to extend; captain manually extended it and successfully indicated down and green. He then took over as pilot flying. Just inside the marker we started losing system a. I got out the QRH; ran the before landing checklist and he gently touched down on [runway] xxl. The fire trucks were waiting; we decided not to reconfigure and asked them to check for leaks/fumes. They indicated a leak from the nose wheel but no fire or fumes. Our gate was blocked by another aircraft and we both agreed to pull straight ahead to gate xx. I contacted ops to advise them and the firemen guided us in. As I walked around the aircraft (maintenance still wasn't there); the fire fighters pointed out a bird in the nose wheel well; which probably happened on takeoff and caused the entire event. Hats off to the captain! Great job!

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Original NASA ASRS Text

Title: B737-700 flight crew reported diverting due to System A hydraulic failure.

Narrative: Approximately 60 miles NE of ZZZ we started seeing an Intermittent Master Caution indication with no abnormal overhead annunciation. We tried the recall; but it did not illuminate anything overhead so we began checking other systems when the Captain displayed the hydraulic quantity indicator; which read approximately 19 percent on the 'A' side. He then gave me the radios (I was the Pilot Flying) and attempted to contact Dispatch to see if they would like us to divert to ZZZ. Shortly during this difficult contact procedure (communication issues with Dispatch); the Master Caution light and the 'A' Engine Driven Hydraulic Pump light illuminated. We ran the QRH Hydraulic Pump Low Pressure Checklist and turned off the 'A' pump. Dispatch finally advised us to go to ZZZ and we were then given direct to the airport along with a descent from ATC. I began using the speedbrakes to help the descent and we noticed the quantity getting lower so we decided to review the loss of 'A' procedure and also agreed to use flaps 15 for landing. Captain received the flaps 15 numbers; we then reviewed the approach and ran the Descent and Approach Checklist. We were cleared direct ZZZZZ for the ILS XXL. Approach informed us they had Fire and Rescue waiting. We decided to drop the gear early when the nose gear failed to extend; Captain manually extended it and successfully indicated down and green. He then took over as Pilot Flying. Just inside the marker we started losing system A. I got out the QRH; ran the Before Landing Checklist and he gently touched down on [Runway] XXL. The fire trucks were waiting; we decided not to reconfigure and asked them to check for leaks/fumes. They indicated a leak from the nose wheel but no fire or fumes. Our gate was blocked by another aircraft and we both agreed to pull straight ahead to Gate XX. I contacted Ops to advise them and the Firemen guided us in. As I walked around the aircraft (Maintenance still wasn't there); the Fire Fighters pointed out a bird in the nose wheel well; which probably happened on takeoff and caused the entire event. Hats off to the Captain! Great job!

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.