Narrative:

At approximately 10;000 MSL during normal descent in the clean configuration with all hydraulic pumps on (since the descent check at 18;000 ft); we noted low right system hydraulic quantity of one unit with yellow warning light displayed. Pressure was decreasing. [We] complied with QRH for loss of hydraulic quantity and shutoff the right engine; auxiliary and transfer pumps. Per QRH; at approximately 5;000 MSL; [we] turned on right engine and auxiliary pumps; with quantity still 1 in an attempt to pressurize system for landing. This was unsuccessful.we then complied with QRH for loss of right hydraulic pressure; declared an emergency with approach control; informed flight attendants and passengers; and advised operations. The alternate gear extension was performed in accordance with QRH. All indications as expected including gear door light remaining illuminated. We landed and stopped on the runway per the QRH. After many minutes contract maintenance showed up. We told him our situation; passed the gear pins to him per QRH and he pinned the gear.then per the QRH; we attempted the procedure to raise and latch the gear doors to get them off the runway so we could taxi or be towed. However; after several attempts he said there was no way he could raise the gear doors even thought the QRH says he should be able to do. He then asked us if we had any hydraulic quantity at all on the right side; which we still did at 1. He closed the gear bypass lever and then instructed us to turn on the auxiliary pump. When we did; the gear doors slowly raised and latched themselves into the up position. He then cleared us to taxi to the gate and he followed us in; in case he needed to tell us to stop if the gear doors happen to reopen.

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Original NASA ASRS Text

Title: An MD88 flight crew successfully dealt with the failure of the right hydraulic system.

Narrative: At approximately 10;000 MSL during normal descent in the clean configuration with all hydraulic pumps on (since the descent check at 18;000 FT); we noted low right system hydraulic quantity of one unit with yellow warning light displayed. Pressure was decreasing. [We] complied with QRH for loss of hydraulic quantity and shutoff the Right Engine; Auxiliary and Transfer pumps. Per QRH; at approximately 5;000 MSL; [we] turned on Right Engine and Auxiliary Pumps; with quantity still 1 in an attempt to pressurize system for landing. This was unsuccessful.We then complied with QRH for loss of right hydraulic pressure; declared an emergency with Approach Control; informed flight attendants and passengers; and advised Operations. The Alternate Gear extension was performed in accordance with QRH. All indications as expected including Gear Door light remaining illuminated. We landed and stopped on the runway per the QRH. After many minutes Contract Maintenance showed up. We told him our situation; passed the gear pins to him per QRH and he pinned the gear.Then per the QRH; we attempted the procedure to raise and latch the gear doors to get them off the runway so we could taxi or be towed. However; after several attempts he said there was no way he could raise the gear doors even thought the QRH says he should be able to do. He then asked us if we had any hydraulic quantity at all on the right side; which we still did at 1. He closed the gear bypass lever and then instructed us to turn on the auxiliary pump. When we did; the gear doors slowly raised and latched themselves into the up position. He then cleared us to taxi to the gate and he followed us in; in case he needed to tell us to stop if the gear doors happen to reopen.

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.