Narrative:

During cruise, the right hydraulic pressure gauge began to fluctuate with an associated fluid loss occurring on the right hydraulic quantity gauge. The appropriate checklist was accomplished. As directed by the checklist, the right system was repressurized prior to landing. At this time, the right system would not repressurize properly. A go around was performed to allow the crew time to properly accomplish the alternate gear extension checklist and ensure all necessary items were performed. A stabilized approach and landing was accomplished. After landing, we remained stopped on the runway until maintenance personnel stowed the landing gear doors. Maintenance then towed us to the gate to complete the flight.

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Original NASA ASRS Text

Title: AN MD80 FLYING IN ZSE AIRSPACE SUFFERS A HYD SYS FAILURE WHILE CRUISING AT FL350. ACFT APCHS ARPT AND PERFORMS A GAR AS THE ALTERNATE SYS IS NOT PRESSURIZED.

Narrative: DURING CRUISE, THE R HYD PRESSURE GAUGE BEGAN TO FLUCTUATE WITH AN ASSOCIATED FLUID LOSS OCCURRING ON THE R HYD QUANTITY GAUGE. THE APPROPRIATE CHKLIST WAS ACCOMPLISHED. AS DIRECTED BY THE CHKLIST, THE R SYS WAS REPRESSURIZED PRIOR TO LNDG. AT THIS TIME, THE R SYS WOULD NOT REPRESSURIZE PROPERLY. A GAR WAS PERFORMED TO ALLOW THE CREW TIME TO PROPERLY ACCOMPLISH THE ALTERNATE GEAR EXTENSION CHKLIST AND ENSURE ALL NECESSARY ITEMS WERE PERFORMED. A STABILIZED APCH AND LNDG WAS ACCOMPLISHED. AFTER LNDG, WE REMAINED STOPPED ON THE RWY UNTIL MAINT PERSONNEL STOWED THE LNDG GEAR DOORS. MAINT THEN TOWED US TO THE GATE TO COMPLETE THE FLT.

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.