<< >> NASA ASRS Report 901024, July 2010

A B757-200 flight crew declared an emergency and landed safely at their destination following the loss of the left hydraulic system.

Attributes
ACN	901024
Time
Date	201007
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Aircraft 1
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Hydraulic System
Person 1
Function	First Officer Pilot Not Flying
Experience	Flight Crew Last 90 Days 250 Flight Crew Total 16000 Flight Crew Type 1500
Person 2
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 38 Flight Crew Total 19271 Flight Crew Type 6916
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

Two hours after takeoff we received EICAS hydraulic left engine pump low psi; followed flight manual; turned pump off; quantity okay. After starting our descent; a deadheading company pilot from coach came forward and told us that there was a loud metal on metal sound in cabin; he joined us in the cockpit just as EICAS warning 'hydraulic left low quantity' illuminated. Followed aom (aircraft operating manual) checklist; checked quantity was .49 rf (refill) and decreasing even after aom actions. Quantity decreased to .06 quickly. We looked at the potential checklist that may need to be done if the ptu (power transfer unit) were to malfunction and decided to declare an emergency. The captain flew and talked; the deadheading pilot sent messages to dispatch and I worked the checklist; we lowered the gear early; followed by flaps and landed without incident. Great CRM by all involved.

Related reports:

• A B757-200 EICAS alerted speed card and bleed along with an ...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: A B757-200 flight crew declared an emergency and landed safely at their destination following the loss of the left hydraulic system.

Narrative: Two hours after takeoff we received EICAS hydraulic left engine pump low psi; followed Flight Manual; turned pump off; quantity okay. After starting our descent; a deadheading company pilot from Coach came forward and told us that there was a loud metal on metal sound in cabin; he joined us in the cockpit just as EICAS warning 'hydraulic left low quantity' illuminated. Followed AOM (Aircraft Operating Manual) checklist; checked quantity was .49 rf (refill) and decreasing even after AOM actions. Quantity decreased to .06 quickly. We looked at the potential checklist that may need to be done if the PTU (Power Transfer Unit) were to malfunction and decided to declare an emergency. The Captain flew and talked; the deadheading pilot sent messages to Dispatch and I worked the checklist; we lowered the gear early; followed by flaps and landed without incident. Great CRM by all involved.

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.