MD80 flight crew experiences right hydraulic system oil quantity loss during slat extension. An emer...

Narrative:

Captain was flying; I was the pilot monitoring. We were on the arrival; and had just extended slats and then turned downwind. We were cleared to descend to 6000 ft and were told to expect a visual to runway xxl. Shortly after starting our descent to 6000 ft we got a master caution light and a right hydraulic press low caution light. The right hydraulic pressure gauge indicated between 0 psi and about 2500 psi as the needle jumped up and down. I looked at the right hydraulic quantity and it was at 0. Shortly thereafter; the right hydraulic pressure was to 0 and stayed at 0. The master caution light illuminated again along with a rudder control manual caution light. We asked approach for an extended downwind and declared and emergency; stating that we would have to remain on the runway after landing. Captain continued to fly and I ran the left/right or both hydraulic quantity loss abnormal checklist. We executed the checklist including emergency gear extension and were cleared to land on runway xxr since tower preferred to keep runway xxl open. Landing was uneventful with a smooth touchdown. We stopped on the runway. Arff met the aircraft; saw no hazards other than our gear doors were down and the right reverser was not stowed (at this point we also had a reverser accumulator low caution light). We later discovered that the skid on the left gear ripped off on landing; thus damaging that gear door. Maintenance then pinned the gear; stowed the gear doors; and a ramp crew towed us to the gate.

Original NASA ASRS Text

Title: MD80 Flight Crew experiences right hydraulic system oil quantity loss during slat extension. An emergency is declared; the gear extended manually; and a safe landing at destination ensues.

Narrative: Captain was flying; I was the pilot monitoring. We were on the arrival; and had just extended slats and then turned downwind. We were cleared to descend to 6000 FT and were told to expect a visual to Runway XXL. Shortly after starting our descent to 6000 FT we got a master caution light and a R HYD PRESS LOW caution light. The right hydraulic pressure gauge indicated between 0 PSI and about 2500 PSI as the needle jumped up and down. I looked at the right hydraulic quantity and it was at 0. Shortly thereafter; the right hydraulic pressure was to 0 and stayed at 0. The master caution light illuminated again along with a RUDDER CONTROL MANUAL caution light. We asked Approach for an extended downwind and declared and emergency; stating that we would have to remain on the runway after landing. Captain continued to fly and I ran the L/R or both hydraulic quantity loss abnormal checklist. We executed the checklist including emergency gear extension and were cleared to land on Runway XXR since Tower preferred to keep Runway XXL open. Landing was uneventful with a smooth touchdown. We stopped on the runway. ARFF met the aircraft; saw no hazards other than our gear doors were down and the right reverser was not stowed (at this point we also had a REVERSER ACCUMULATOR LOW caution light). We later discovered that the skid on the left gear ripped off on landing; thus damaging that gear door. Maintenance then pinned the gear; stowed the gear doors; and a ramp crew towed 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.

Attributes
ACN	858601
Time
Date	200910
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Component
Aircraft Component	Hydraulic Main System
Person 1
Function	Pilot Not Flying First Officer
Person 2
Function	Pilot Flying Captain
Events
Anomaly	Aircraft Equipment Problem Critical

MD80 flight crew experiences right hydraulic system oil quantity loss during slat extension. An emergency is declared; the gear extended manually; and a safe landing at destination ensues.