A B757 EICAS alerted rt hydraulic low qty as the crew prepared for landing. Anticipating further fai...

Attributes
ACN	946821
Time
Date	201105
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	Hydraulic Main System
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 80 Flight Crew Total 1100 Flight Crew Type 140
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

On descent to our destination for approach to the runway the aircraft experienced a right system hydraulic low qty EICAS message display. At 12;000 ft we requested the long runway. ATC told us that [runway] was for departures. We continued the approach to our departure runway and ran the QRH checklist for low hydraulic quantity. In anticipation of the loss of the right system; we looked at the QRH right hydraulic system failure checklist and analyzed the potential to the operating systems. We again inquired about the availability of the long runway and we were assigned a different runway. After initial configuration changes for approach; quantity continued to decrease and we declared an emergency. ATC assigned us the long runway. We landed uneventfully; taxied clear of the runway; and released the emergency equipment. All systems operated normally and the right system quantity was stable; so we taxied to the ramp. We were then towed to the gate.

Original NASA ASRS Text

Title: A B757 EICAS alerted RT HYD LOW QTY as the crew prepared for landing. Anticipating further failures the crew requested the longest runway; but were not given their request until they declared an emergency when the fluid further decreased.

Narrative: On descent to our destination for approach to the runway the aircraft experienced a right system HYD LOW QTY EICAS message display. At 12;000 FT we requested the long runway. ATC told us that [runway] was for departures. We continued the approach to our departure runway and ran the QRH checklist for low hydraulic quantity. In anticipation of the loss of the right system; we looked at the QRH right hydraulic system failure checklist and analyzed the potential to the operating systems. We again inquired about the availability of the long runway and we were assigned a different runway. After initial configuration changes for approach; quantity continued to decrease and we declared an emergency. ATC assigned us the long runway. We landed uneventfully; taxied clear of the runway; and released the emergency equipment. All systems operated normally and the right system quantity was stable; so we taxied to the ramp. We were then towed 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.

A B757 EICAS alerted rt hydraulic low qty as the crew prepared for landing. Anticipating further failures the crew requested the longest runway; but were not given their request until they declared an emergency when the fluid further decreased.