An emb-145 flight crew deals with the malfunctioning of their #1 hydraulic system. Fluid levels declining, as annunciated on their EICAS system during a departure from and a return land at ord, il.

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Attributes
ACN	565418
Time
Date	200211
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : c90.tracon
State Reference	IL
Altitude	msl bound lower : 12000 msl bound upper : 14000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : c90.tracon tower : ord.tower
Operator	common carrier : air carrier
Make Model Name	EMB ERJ 145 ER&LR
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : vacating altitude climbout : intermediate altitude ground : maintenance
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial
ASRS Report	565418
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	565419
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : eicas hyd qty
Resolutory Action	controller : provided flight assist flight crew : landed in emergency condition flight crew : diverted to another airport flight crew : declared emergency other
Consequence	other other other Other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

During climb out from ord we noticed a hydraulic #1 low quantity (blue) on the EICAS. We decided to return to ord and leveled at 14000 ft. Quantity continued to fall and was followed by a hydraulic system #1 failure. We briefed the flight attendant, declared an emergency and ran the appropriate checklists. We landed into the wind without incident on runway 32R at ord. The passenger were deplaned on the runway and the aircraft was towed to the hangar. Supplemental information from acn #565419: notified company and dispatch and returned to land at ord. Deplaned aircraft on runway due to no nosewheel steering due to hydraulic failure.

Original NASA ASRS Text

Title: AN EMB-145 FLC DEALS WITH THE MALFUNCTIONING OF THEIR #1 HYD SYS. FLUID LEVELS DECLINING, AS ANNUNCIATED ON THEIR EICAS SYS DURING A DEP FROM AND A RETURN LAND AT ORD, IL.

Narrative: DURING CLBOUT FROM ORD WE NOTICED A HYD #1 LOW QUANTITY (BLUE) ON THE EICAS. WE DECIDED TO RETURN TO ORD AND LEVELED AT 14000 FT. QUANTITY CONTINUED TO FALL AND WAS FOLLOWED BY A HYD SYS #1 FAILURE. WE BRIEFED THE FLT ATTENDANT, DECLARED AN EMER AND RAN THE APPROPRIATE CHKLISTS. WE LANDED INTO THE WIND WITHOUT INCIDENT ON RWY 32R AT ORD. THE PAX WERE DEPLANED ON THE RWY AND THE ACFT WAS TOWED TO THE HANGAR. SUPPLEMENTAL INFO FROM ACN #565419: NOTIFIED COMPANY AND DISPATCH AND RETURNED TO LAND AT ORD. DEPLANED ACFT ON RWY DUE TO NO NOSEWHEEL STEERING DUE TO HYD FAILURE.

Data retrieved from NASA's ASRS site as of July 2007 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.