B757 flight crew has hydraulic malfunction; declares emergency and diverts for landing.

Attributes
ACN	715908
Time
Date	200610
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : zzzz.artcc
State Reference	FO
Altitude	msl single value : 38000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zzzz.artcc
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	715908
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	715460
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	aircraft equipment other aircraft equipment : eicas warning other flight crewa other flight crewb
Resolutory Action	flight crew : declared emergency flight crew : diverted to another airport flight crew : landed as precaution
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

Approximately 1.5 hours into flight noted EICAS hydraulic quantity low. Checked status page and noted .42RF on left system. Turned off left hydraulic pumps as per QRH. Noted quantity continued to drop. Elected to divert to ZZZZ1 as only 75 mi west and more than 600 mi to ZZZZ2. Declared emergency and was vectored to uneventful approach and landing. Noted continual decrease in hydraulic fluid quantity. About .13 when configured and 0 on final. Maintenance found broken hose on left side hydraulic and fluid leaking all though left wheel well. Repaired; svced and continued normally to ZZZZ2.

Original NASA ASRS Text

Title: B757 FLT CREW HAS HYD MALFUNCTION; DECLARES EMER AND DIVERTS FOR LNDG.

Narrative: APPROX 1.5 HRS INTO FLT NOTED EICAS HYD QUANTITY LOW. CHKED STATUS PAGE AND NOTED .42RF ON L SYS. TURNED OFF L HYD PUMPS AS PER QRH. NOTED QUANTITY CONTINUED TO DROP. ELECTED TO DIVERT TO ZZZZ1 AS ONLY 75 MI W AND MORE THAN 600 MI TO ZZZZ2. DECLARED EMER AND WAS VECTORED TO UNEVENTFUL APCH AND LNDG. NOTED CONTINUAL DECREASE IN HYD FLUID QUANTITY. ABOUT .13 WHEN CONFIGURED AND 0 ON FINAL. MAINT FOUND BROKEN HOSE ON L SIDE HYD AND FLUID LEAKING ALL THOUGH L WHEEL WELL. REPAIRED; SVCED AND CONTINUED NORMALLY TO ZZZZ2.

Data retrieved from NASA's ASRS site as of January 2009 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.