Narrative:

While at cruise; FL360 going direct ZZZZ1; 445 mi away from this fix; and en route from ZZZZ2 to ZZZ; a failure of the yellow hydraulic system occurred. ECAM warnings alerted us of this failure and it was confirmed by observing quality zero. All flight manual procedures accomplished and decision was made to divert to ZZZZ3. Based on airports available; WX conditions; runway length; and available emergency resources; ZZZZ3 was selected. Divert accomplished using dispatch and other air carrier and ATC resources. At divert destination; an overweight landing was required. All flight manual procedures accomplished in accordance with overweight landing checklist. No additional abnormal occurrences. Landing made safely and within parameters of flight manual and normal taxi to parking accomplished. At all times; emergency crews were on alert and at all times; aircraft system were monitored to ensure safe operation.

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Original NASA ASRS Text

Title: A320 CAPT REPORTS YELLOW HYD SYSTEM FAILURE AT FL350 AND DIVERSION TO NEAREST SUITABLE ARPT FOR OVERWEIGHT LANDING.

Narrative: WHILE AT CRUISE; FL360 GOING DIRECT ZZZZ1; 445 MI AWAY FROM THIS FIX; AND ENRTE FROM ZZZZ2 TO ZZZ; A FAILURE OF THE YELLOW HYD SYS OCCURRED. ECAM WARNINGS ALERTED US OF THIS FAILURE AND IT WAS CONFIRMED BY OBSERVING QUALITY ZERO. ALL FLT MANUAL PROCS ACCOMPLISHED AND DECISION WAS MADE TO DIVERT TO ZZZZ3. BASED ON ARPTS AVAILABLE; WX CONDITIONS; RWY LENGTH; AND AVAILABLE EMER RESOURCES; ZZZZ3 WAS SELECTED. DIVERT ACCOMPLISHED USING DISPATCH AND OTHER ACR AND ATC RESOURCES. AT DIVERT DEST; AN OVERWT LNDG WAS REQUIRED. ALL FLT MANUAL PROCS ACCOMPLISHED IN ACCORDANCE WITH OVERWT LNDG CHKLIST. NO ADDITIONAL ABNORMAL OCCURRENCES. LNDG MADE SAFELY AND WITHIN PARAMETERS OF FLT MANUAL AND NORMAL TAXI TO PARKING ACCOMPLISHED. AT ALL TIMES; EMER CREWS WERE ON ALERT AND AT ALL TIMES; ACFT SYS WERE MONITORED TO ENSURE SAFE OP.

Data retrieved from NASA's ASRS site as of May 2009 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.