Narrative:

While in cruise we noted loss of system 'a' hydraulic fluid and then pressure. We performed the appropriate checklists. Crew determined that our best course of action was to continue to phl where maintenance was available. Landing was uneventful. Just like the simulator! Callback conversation with reporter revealed the following information: the reporter stated that the 'a' hydraulic system failure was caused by a cracked case on the #2 electric motor driven hydraulic pump. The reporter said this electric pump had been replaced on the previous flight and was recently overhauled.

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Original NASA ASRS Text

Title: A B737-400 IN CRUISE AT FL330 EXPERIENCED A LOSS OF 'A' HYD SYS PRESSURE AND QUANTITY CAUSED BY A FAILED #2 ELECTRIC MOTOR DRIVEN HYD PUMP.

Narrative: WHILE IN CRUISE WE NOTED LOSS OF SYS 'A' HYD FLUID AND THEN PRESSURE. WE PERFORMED THE APPROPRIATE CHKLISTS. CREW DETERMINED THAT OUR BEST COURSE OF ACTION WAS TO CONTINUE TO PHL WHERE MAINT WAS AVAILABLE. LNDG WAS UNEVENTFUL. JUST LIKE THE SIMULATOR! CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THAT THE 'A' HYD SYS FAILURE WAS CAUSED BY A CRACKED CASE ON THE #2 ELECTRIC MOTOR DRIVEN HYD PUMP. THE RPTR SAID THIS ELECTRIC PUMP HAD BEEN REPLACED ON THE PREVIOUS FLT AND WAS RECENTLY OVERHAULED.

Data retrieved from NASA's ASRS site as of July 2007 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.