A B757 flight crew in cruise flight experiences hydraulic pump overheat and fluid loss. They declare...

Attributes
ACN	710090
Time
Date	200609
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 36000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zzz.artcc artcc : zjx.artcc
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 190 flight time total : 14000 flight time type : 5000
ASRS Report	710090
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : diverted to another airport flight crew : declared emergency
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Aircraft had previous log item of left engine hydraulic pump overheat. Maintenance changed filter and ran for 5 mins and cleared item. Over the mountains we had left engine hydraulic pump caution on EICAS along with pump pressure light on overhead. Shut pump off per checklist. Talked to dispatch and maintenance. Everybody ok to continue. 5 mins later; left hydraulic quantity was dropping. Talked to maintenance and dispatch; checked WX and runway conditions; and got clearance to ZZZ declaring an emergency. Notified flight attendants and cabin advisory. Got left hydraulic quantity on EICAS with rsvr light on overhead. Shut off electric pump per checklist. Completed checklists for rudder ratio and left yaw damper. Reviewed inoperative equipment. Previewed inoperative ptu procedures. Selected flap 1 degree on downwind for runway 34L and flaps stuck at 1/2 degree with ptu xfer unit status message. Completed that checklist along with alternate gear and flaps. I (captain) landed with flaps 20 degrees. Emergency crew checked over the airplane and company tug towed us in.

Original NASA ASRS Text

Title: A B757 FLT CREW IN CRUISE FLT EXPERIENCES HYD PUMP OVERHEAT AND FLUID LOSS. THEY DECLARE AN EMER AND LAND SAFELY.

Narrative: ACFT HAD PREVIOUS LOG ITEM OF L ENG HYD PUMP OVERHEAT. MAINT CHANGED FILTER AND RAN FOR 5 MINS AND CLRED ITEM. OVER THE MOUNTAINS WE HAD L ENG HYD PUMP CAUTION ON EICAS ALONG WITH PUMP PRESSURE LIGHT ON OVERHEAD. SHUT PUMP OFF PER CHKLIST. TALKED TO DISPATCH AND MAINT. EVERYBODY OK TO CONTINUE. 5 MINS LATER; L HYD QUANTITY WAS DROPPING. TALKED TO MAINT AND DISPATCH; CHKED WX AND RWY CONDITIONS; AND GOT CLRNC TO ZZZ DECLARING AN EMER. NOTIFIED FLT ATTENDANTS AND CABIN ADVISORY. GOT L HYD QUANTITY ON EICAS WITH RSVR LIGHT ON OVERHEAD. SHUT OFF ELECTRIC PUMP PER CHKLIST. COMPLETED CHKLISTS FOR RUDDER RATIO AND L YAW DAMPER. REVIEWED INOP EQUIP. PREVIEWED INOP PTU PROCS. SELECTED FLAP 1 DEG ON DOWNWIND FOR RWY 34L AND FLAPS STUCK AT 1/2 DEG WITH PTU XFER UNIT STATUS MESSAGE. COMPLETED THAT CHKLIST ALONG WITH ALTERNATE GEAR AND FLAPS. I (CAPT) LANDED WITH FLAPS 20 DEGS. EMER CREW CHKED OVER THE AIRPLANE AND COMPANY TUG TOWED US IN.

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.

A B757 flight crew in cruise flight experiences hydraulic pump overheat and fluid loss. They declare an emergency and land safely.