Narrative:

During climb out and acceleration, the flaps were retracted on schedule. As the flaps moved, we received an ECAM message indicating that the yellow hydraulic reservoir was low (hydraulic yellow reservoir low level). This was soon followed by a low pressure message. I placed the aircraft on autoplt and instructed the first officer to complete the ECAM procedure. Once complete, the inoperative system were reviewed and the status of the 2 remaining hydraulic system was evaluated. We called dispatch and apprised them of the situation. Dispatch in turn contacted our line maintenance and the problem was again reviewed via the conference call. Initially with the loss of the yellow system, I was prepared to return to iad. However, after review of all pertinent information, the first officer and I agreed that the flight could safely continue to the destination. The factors we considered were the fact that the green and blue hydraulic system were functioning normally and suffered no loss of fluid, no major components were lost due to the failure, and a return to iad would require an overweight landing close to 20000 pounds over maximum landing weight. Also, the WX en route to the destination was excellent with plenty of suitable alternates available. I informed dispatch that it was my inclination to continue to the destination and dispatch agreed. The flight continued to the destination and landed without further incident. Callback conversation with reporter revealed the following information: the reporter stated maintenance did not advise the exact component that caused the loss of hydraulic fluid, but did indicate it was located in the reservoir fill line.

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Original NASA ASRS Text

Title: AN AIRBUS A320 ON TKOF CLB AT 3000 FT LOST YELLOW HYD SYS QUANTITY AND PRESSURE. EVALUATED SYS LOSS WITH MAINT AND DISPATCH AND ELECTED TO CONTINUE FLT TO DEST.

Narrative: DURING CLBOUT AND ACCELERATION, THE FLAPS WERE RETRACTED ON SCHEDULE. AS THE FLAPS MOVED, WE RECEIVED AN ECAM MESSAGE INDICATING THAT THE YELLOW HYD RESERVOIR WAS LOW (HYD YELLOW RESERVOIR LOW LEVEL). THIS WAS SOON FOLLOWED BY A LOW PRESSURE MESSAGE. I PLACED THE ACFT ON AUTOPLT AND INSTRUCTED THE FO TO COMPLETE THE ECAM PROC. ONCE COMPLETE, THE INOP SYS WERE REVIEWED AND THE STATUS OF THE 2 REMAINING HYD SYS WAS EVALUATED. WE CALLED DISPATCH AND APPRISED THEM OF THE SIT. DISPATCH IN TURN CONTACTED OUR LINE MAINT AND THE PROB WAS AGAIN REVIEWED VIA THE CONFERENCE CALL. INITIALLY WITH THE LOSS OF THE YELLOW SYS, I WAS PREPARED TO RETURN TO IAD. HOWEVER, AFTER REVIEW OF ALL PERTINENT INFO, THE FO AND I AGREED THAT THE FLT COULD SAFELY CONTINUE TO THE DEST. THE FACTORS WE CONSIDERED WERE THE FACT THAT THE GREEN AND BLUE HYD SYS WERE FUNCTIONING NORMALLY AND SUFFERED NO LOSS OF FLUID, NO MAJOR COMPONENTS WERE LOST DUE TO THE FAILURE, AND A RETURN TO IAD WOULD REQUIRE AN OVERWT LNDG CLOSE TO 20000 LBS OVER MAX LNDG WT. ALSO, THE WX ENRTE TO THE DEST WAS EXCELLENT WITH PLENTY OF SUITABLE ALTERNATES AVAILABLE. I INFORMED DISPATCH THAT IT WAS MY INCLINATION TO CONTINUE TO THE DEST AND DISPATCH AGREED. THE FLT CONTINUED TO THE DEST AND LANDED WITHOUT FURTHER INCIDENT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED MAINT DID NOT ADVISE THE EXACT COMPONENT THAT CAUSED THE LOSS OF HYD FLUID, BUT DID INDICATE IT WAS LOCATED IN THE RESERVOIR FILL LINE.

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.