Narrative:

We were taxiing for takeoff at ZZZ and had just completed the control check. We got a spoilers EICAS message and had turned onto an unused taxiway; set the parking brake and contacted maintenance control to assess the problem. Maintenance control suggested we deploy the spoilers and re-stow them to reset the system. When we did this; we noticed a rapid drop in right system hydraulic quantity. We shut off the right hydraulic pumps; both engines and were towed back to the gate without further incident.

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Original NASA ASRS Text

Title: TROUBLESHOOTING OF EICAS 'SPOILERS' MSG PRIOR TO TKOF TRIGGERS LOSS OF RIGHT HYDRAULIC SYSTEM FOR B757-200 FLT CREW.

Narrative: WE WERE TAXIING FOR TKOF AT ZZZ AND HAD JUST COMPLETED THE CTL CHK. WE GOT A SPOILERS EICAS MESSAGE AND HAD TURNED ONTO AN UNUSED TXWY; SET THE PARKING BRAKE AND CONTACTED MAINT CTL TO ASSESS THE PROB. MAINT CTL SUGGESTED WE DEPLOY THE SPOILERS AND RE-STOW THEM TO RESET THE SYS. WHEN WE DID THIS; WE NOTICED A RAPID DROP IN R SYS HYD QUANTITY. WE SHUT OFF THE R HYD PUMPS; BOTH ENGS AND WERE TOWED BACK TO THE GATE WITHOUT FURTHER INCIDENT.

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.