Narrative:

On climbout/normal departure passing approximately 13;000 feet MSL; the 'B' hydraulic system engine 2 pump low pressure light illuminated. The QRH was complied with. A minute or two afterward; the 'B' system electric pump low pressure light flickered and then remained illuminated. We checked the hydraulic gauges and noted the 'B' system needle was erratic and then settled between 1/4 and 1/2 full. The first officer continued flying and communicating with ATC. The flight attendants were notified. I addressed the QRH for the 'B' system failure. We initially leveled off at 16;000 feet MSL and then continued to FL220. Coordinating with dispatch and maintenance; the 'a' and standby hydraulic systems functioning normally and after working through our malfunction; being near the halfway point; I decided to continue to our destination and a longer runway. The QRH checklist was completed and reviewed and a request was made with approach control to have emergency equipment standing by as a precaution. Transfer of control of the aircraft was accomplished; landing and go-around procedures reviewed; and an uneventful flaps 15 recovery was made. Maintenance was at the gate to receive the aircraft.

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Original NASA ASRS Text

Title: B737-300 flight crew experiences the loss of the B hydraulic system during climb. After securing both pumps the flight continues to destination (short flight) for landing with the B system inoperative and the flaps at 15 degrees.

Narrative: On climbout/normal departure passing approximately 13;000 feet MSL; the 'B' hydraulic system engine 2 pump low pressure light illuminated. The QRH was complied with. A minute or two afterward; the 'B' system electric pump low pressure light flickered and then remained illuminated. We checked the hydraulic gauges and noted the 'B' system needle was erratic and then settled between 1/4 and 1/2 full. The First Officer continued flying and communicating with ATC. The flight attendants were notified. I addressed the QRH for the 'B' system failure. We initially leveled off at 16;000 feet MSL and then continued to FL220. Coordinating with Dispatch and Maintenance; the 'A' and standby hydraulic systems functioning normally and after working through our malfunction; being near the halfway point; I decided to continue to our destination and a longer runway. The QRH checklist was completed and reviewed and a request was made with Approach Control to have emergency equipment standing by as a precaution. Transfer of control of the aircraft was accomplished; landing and go-around procedures reviewed; and an uneventful flaps 15 recovery was made. Maintenance was at the gate to receive the aircraft.

Data retrieved from NASA's ASRS site as of July 2013 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.