B757-200 flight crew responds to a low hydraulic quantity EICAS warning.

Attributes
ACN	847164
Time
Date	200908
Local Time Of Day	0601-1200
Place
Locale Reference	ORD.Airport
State Reference	IL
Aircraft 1
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	Descent
Flight Plan	IFR
Component
Aircraft Component	Hydraulic Syst Reservoir Tank
Person 1
Function	Pilot Flying Captain
Experience	Flight Crew Last 90 Days 240 Flight Crew Total 18000 Flight Crew Type 8600
Person 2
Function	Pilot Not Flying First Officer
Experience	Flight Crew Last 90 Days 240 Flight Crew Total 12500 Flight Crew Type 6500
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

On descent through approximately fl 180; I noticed left hyd qty EICAS message. Initial quantity reading was .47. Checklist was followed and left hydraulic system pumps were shut off to conserve fluid. Lowered gear early about 12 miles out on final to see if gear would extend. Gear extended normally and visual approach to normal landing was accomplished. All checklists were accomplished by the first officer including a review of affected items. Upon arrival at the gate; the left system quantity read .38. Crew coordination throughout the event was excellent. Plenty of time was allowed to accomplished all required checklist items.

Original NASA ASRS Text

Title: B757-200 flight crew responds to a low hydraulic quantity EICAS warning.

Narrative: On descent through approximately FL 180; I noticed L Hyd Qty EICAS message. Initial quantity reading was .47. Checklist was followed and Left Hydraulic System Pumps were shut off to conserve fluid. Lowered gear early about 12 miles out on final to see if gear would extend. Gear extended normally and visual approach to normal landing was accomplished. All checklists were accomplished by the First Officer including a review of affected items. Upon arrival at the gate; the L system quantity read .38. Crew coordination throughout the event was excellent. Plenty of time was allowed to accomplished all required checklist items.

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.