<< >> NASA ASRS Report 772328, January 2008

B757 flight crew experiences hydraulic pump failure during takeoff and captain elects to reject at 100 KTS and return to the gate.

Attributes
ACN	772328
Time
Date	200801
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : atl.airport
State Reference	GA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	ground : takeoff roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : flight engineer pilot : instrument pilot : multi engine pilot : atp
Experience	flight time last 90 days : 90 flight time total : 14000 flight time type : 2500
ASRS Report	772328
Events
Anomaly	aircraft equipment problem : less severe non adherence : company policies
Independent Detector	aircraft equipment other aircraft equipment : eicas other flight crewa
Resolutory Action	flight crew : rejected takeoff
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

During takeoff roll at approximately 85-90 KTS I noticed a right hydraulic pump message on the upper EICAS; with an associated pressure light on the right engine driven hydraulic pump on the overhead panel. I made the command decision to abort the takeoff. Autobrakes were applied at approximately 100 KTS. The aircraft was returned to the gate uneventfully. No passenger injuries were reported. No damage to the aircraft was apparent. Wheel brakes did not overheat. All applicable fom; logbook and quick reference manual procedures were referenced and complied with. Factor in the decision to abort: the aircraft on the previous segment was returned to the gate with total right hydraulic failure. The right main gear anti-skid assembly was replaced and the aircraft returned to service. When the hydraulic pump came on I thought I may have lost all hydraulics on the right system.

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Original NASA ASRS Text

Title: B757 FLT CREW EXPERIENCES HYDRAULIC PUMP FAILURE DURING TKOF AND CAPT ELECTS TO REJECT AT 100 KTS AND RETURN TO THE GATE.

Narrative: DURING TKOF ROLL AT APPROX 85-90 KTS I NOTICED A R HYD PUMP MESSAGE ON THE UPPER EICAS; WITH AN ASSOCIATED PRESSURE LIGHT ON THE R ENG DRIVEN HYD PUMP ON THE OVERHEAD PANEL. I MADE THE COMMAND DECISION TO ABORT THE TKOF. AUTOBRAKES WERE APPLIED AT APPROX 100 KTS. THE ACFT WAS RETURNED TO THE GATE UNEVENTFULLY. NO PAX INJURIES WERE RPTED. NO DAMAGE TO THE ACFT WAS APPARENT. WHEEL BRAKES DID NOT OVERHEAT. ALL APPLICABLE FOM; LOGBOOK AND QUICK REF MANUAL PROCS WERE REFED AND COMPLIED WITH. FACTOR IN THE DECISION TO ABORT: THE ACFT ON THE PREVIOUS SEGMENT WAS RETURNED TO THE GATE WITH TOTAL R HYD FAILURE. THE R MAIN GEAR ANTI-SKID ASSEMBLY WAS REPLACED AND THE ACFT RETURNED TO SVC. WHEN THE HYD PUMP CAME ON I THOUGHT I MAY HAVE LOST ALL HYDS ON THE R SYS.

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.