Narrative:

During cruise flight the right engine driven hydraulic pump pressure low light illuminated as well as rudder control manual. Pressure showed zero and quantity showed between 6-8 quarts. Ran the QRH procedure. During the descent into destination at FL180; I turned on the auxiliary pump and the pressure returned momentarily and then back to zero as the quantity went to near zero. We again ran the QRH procedure. The captain declared an emergency. We manually extended the gear. Momentarily putting the auxiliary pump on to get the gear doors up. Arff stood by. We landed uneventfully. Stopped on the runway. Had operations pin the gear and tow us to the gate.

Google
 

Original NASA ASRS Text

Title: An MD80's right engine driven hydraulic pump failed at cruise altitude; an emergency was declared. After gear extension the aux pump fluid was used to retract the landing gear doors.

Narrative: During cruise flight the right engine driven hydraulic pump pressure low light illuminated as well as rudder control manual. Pressure showed zero and quantity showed between 6-8 quarts. Ran the QRH procedure. During the descent into destination at FL180; I turned on the auxiliary pump and the pressure returned momentarily and then back to zero as the quantity went to near zero. We again ran the QRH procedure. The Captain declared an emergency. We manually extended the gear. Momentarily putting the auxiliary pump on to get the gear doors up. ARFF stood by. We landed uneventfully. Stopped on the runway. Had operations pin the gear and tow us to the gate.

Data retrieved from NASA's ASRS site as of April 2012 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.