During their descent an md-82 flight crew performed appropriate QRH procedures in response to an abn...

Narrative:

During descent for landing; leaving FL180; the 'right hydraulic low pressure' and 'manual rudder control' annunciators on the overhead panel illuminated. The right hydraulic pressure read nearly zero psi. The right hydraulic quantity read 16+ (very high). We performed the hydraulic pressure low; left/right quantity low or decreasing or abnormally high abnormal QRH checklist but the abnormal condition persisted. We declared an emergency with approach control and were cleared for a visual approach to runway xxr. Crash fire rescue equipment; as well as company maintenance; were notified and joined the common frequency. At 5;000 ft descending we attempted and successfully re-pressurized the right hydraulic system in accordance with the QRH. We then extended the slats; flaps; and landing gear on schedule per the QRH and landed without incident. Crash fire rescue equipment conducted a visual inspection of the aircraft and cleared maintenance to pin the gear and tow the aircraft to the gate.

Original NASA ASRS Text

Title: During their descent an MD-82 flight crew performed appropriate QRH procedures in response to an abnormal hydraulic system condition; declared an emergency; and landed without incident.

Narrative: During descent for landing; leaving FL180; the 'Right Hydraulic Low Pressure' and 'Manual Rudder Control' annunciators on the overhead panel illuminated. The right hydraulic pressure read nearly zero PSI. The right hydraulic quantity read 16+ (very high). We performed the Hydraulic Pressure Low; L/R quantity Low or Decreasing or Abnormally High Abnormal QRH checklist but the abnormal condition persisted. We declared an emergency with Approach Control and were cleared for a visual approach to Runway XXR. CFR; as well as Company Maintenance; were notified and joined the common frequency. At 5;000 FT descending we attempted and successfully re-pressurized the right hydraulic system IAW the QRH. We then extended the slats; flaps; and landing gear on schedule per the QRH and landed without incident. CFR conducted a visual inspection of the aircraft and cleared Maintenance to pin the gear and tow the aircraft to the gate.

Data retrieved from NASA's ASRS site as of July 2013 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.

Attributes
ACN	1136416
Time
Date	201312
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Aircraft 1
Make Model Name	MD-82
Operating Under FAR Part	Part 121
Flight Phase	Descent
Flight Plan	IFR
Component
Aircraft Component	Hydraulic System
Person 1
Function	First Officer Pilot Not Flying
Person 2
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

During their descent an md-82 flight crew performed appropriate QRH procedures in response to an abnormal hydraulic system condition; declared an emergency; and landed without incident.