B757-200 flight crew experienced failure of the left engine drive hydraulic pump along with a status...

Narrative:

During climb; got an intermittent left engine hydraulic pump EICAS message that quickly extinguished. Light came on again intermittently and went out. Approximately 10 minutes later; light came on steady. We accomplished the irregular procedure; verified hydraulic quantity was not decreasing and sent a maintenance request. We also noticed we had a power transfer unit EICAS status message which concerned us. We contacted dispatch and conferred with maintenance control who had us recycle the power transfer unit continuous circuit breaker to no avail. Since we were down to only the left electric hydraulic pump with no back-up power transfer unit; we elected to declare a precautionary emergency with center. The captain configured early on the approach with gear and flaps separately. No anomalies were noted and we flew an uneventful ILS and taxied to the gate.

Original NASA ASRS Text

Title: B757-200 flight crew experienced failure of the left engine drive hydraulic pump along with a status message regarding the Power Transfer Unit; a hydraulic system abnormal configuration facilitator. Declared emergency for an eventual uneventful landing at their destination.

Narrative: During climb; got an intermittent Left Engine Hydraulic Pump EICAS message that quickly extinguished. Light came on again intermittently and went out. Approximately 10 minutes later; light came on steady. We accomplished the irregular procedure; verified hydraulic quantity was not decreasing and sent a Maintenance Request. We also noticed we had a Power Transfer Unit EICAS status message which concerned us. We contacted Dispatch and conferred with Maintenance Control who had us recycle the Power Transfer Unit Continuous CB to no avail. Since we were down to only the Left Electric Hydraulic Pump with no back-up Power Transfer Unit; we elected to declare a precautionary emergency with Center. The Captain configured early on the approach with gear and flaps separately. No anomalies were noted and we flew an uneventful ILS and taxied to the gate.

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.

Attributes
ACN	820117
Time
Date	200901
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Component
Aircraft Component	Hydraulic System Pump
Person 1
Function	First Officer Pilot Not Flying
Experience	Flight Crew Last 90 Days 240 Flight Crew Total 7496 Flight Crew Type 6308
Person 2
Function	Pilot Flying Captain
Experience	Flight Crew Last 90 Days 120 Flight Crew Total 16000 Flight Crew Type 7295
Events
Anomaly	Aircraft Equipment Problem Less Severe

B757-200 flight crew experienced failure of the left engine drive hydraulic pump along with a status message regarding the power transfer unit; a hydraulic system abnormal configuration facilitator. Declared emergency for an eventual uneventful landing at their destination.