Narrative:

During cruise flight at FL330, both pressure and quantity in the 'a' hydraulic system went to zero. Completed appropriate checklist which led to a diversion and landing at jfk. Manually lowered landing gear and extended flaps electrically. After landing and being towed to parking gate, it was determined that a hydraulic pressure line near one of the engine driven pumps had ruptured, resulting in total loss of hydraulic fluid.

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Original NASA ASRS Text

Title: B727 CREW HAD 'A' SYS HYD FAILURE.

Narrative: DURING CRUISE FLT AT FL330, BOTH PRESSURE AND QUANTITY IN THE 'A' HYD SYS WENT TO ZERO. COMPLETED APPROPRIATE CHKLIST WHICH LED TO A DIVERSION AND LNDG AT JFK. MANUALLY LOWERED LNDG GEAR AND EXTENDED FLAPS ELECTRICALLY. AFTER LNDG AND BEING TOWED TO PARKING GATE, IT WAS DETERMINED THAT A HYD PRESSURE LINE NEAR ONE OF THE ENG DRIVEN PUMPS HAD RUPTURED, RESULTING IN TOTAL LOSS OF HYD FLUID.

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.