B757-200 loses left main hydraulic system. Ptu fails when gear extended.

Attributes
ACN	810820
Time
Date	200811
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 36000
Aircraft 1
Controlling Facilities	artcc : zzz.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
Experience	flight time last 90 days : 210 flight time total : 10000 flight time type : 3500
ASRS Report	810820
Events
Anomaly	aircraft equipment problem : critical
Resolutory Action	flight crew : diverted to another airport flight crew : landed in emergency condition
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Autoplt on at FL360 the left engine driven hydraulic low pressure light comes on. Run checklist; turn pump off. About 15 mins later; all left system hydraulic fluid is lost in massive leak with asymmetry lights illuminated. Ran checklists. Priority handling to divert to ZZZ. On downwind to runway 7; ptu pump fails when gear was extended. Used alternate extension for gear and flaps. Used flaps 20 degrees for landing. Had emergency equipment and tug meet aircraft. Towed in to gate.

Original NASA ASRS Text

Title: B757-200 LOSES LEFT MAIN HYDRAULIC SYSTEM. PTU FAILS WHEN GEAR EXTENDED.

Narrative: AUTOPLT ON AT FL360 THE L ENG DRIVEN HYD LOW PRESSURE LIGHT COMES ON. RUN CHKLIST; TURN PUMP OFF. ABOUT 15 MINS LATER; ALL L SYS HYD FLUID IS LOST IN MASSIVE LEAK WITH ASYMMETRY LIGHTS ILLUMINATED. RAN CHKLISTS. PRIORITY HANDLING TO DIVERT TO ZZZ. ON DOWNWIND TO RWY 7; PTU PUMP FAILS WHEN GEAR WAS EXTENDED. USED ALTERNATE EXTENSION FOR GEAR AND FLAPS. USED FLAPS 20 DEGS FOR LNDG. HAD EMER EQUIP AND TUG MEET ACFT. TOWED IN TO GATE.

Data retrieved from NASA's ASRS site as of May 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.