A B777-200 flight crew at the gate at ord had cockpit indications of a hydraulic problem. Maintenanc...

Attributes
ACN	700312
Time
Date	200606
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B777-200
Operating Under FAR Part	Part 121
Flight Phase	ground : parked ground : preflight
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 240 flight time total : 17645 flight time type : 2760
ASRS Report	700312
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : less severe maintenance problem : improper maintenance maintenance problem : non compliance with mel non adherence : company policies non adherence : published procedure
Independent Detector	other flight crewa
Supplementary
Problem Areas	Flight Crew Human Performance Maintenance Human Performance Aircraft
Primary Problem	Ambiguous

Narrative:

All 4 hydraulic demand pump fault lights illuminated dimly; but would not illuminate bright. Notified maintenance via vox and ACARS. Station maintenance said would defer -- ok with crew. Had problems with release verification numbers with both release and maintenance document numbers matching ACARS. We did not leave gate until we had all maintenance docs. Scanned the maintenance doc and it looked ok under our rush to make scheduled departure time. In-flight; looked at it closer and had concerns the items deferred were not described completely and accurately. Contacted maintenance control via sat vox and discussed. It appears deferral was not correct and perhaps not been deferrable due to 2 pumps in the same system having a problem. System operated normally. It appeared it was a warning light intensity problem. Contributing to the rushed feeling was a 'friendly' company note from the chief pilot stating the importance of our time-critical flight and please do what we can to get out on time. Even though I know what is really right; subtle pressure has its way.

Original NASA ASRS Text

Title: A B777-200 FLT CREW AT THE GATE AT ORD HAD COCKPIT INDICATIONS OF A HYD PROB. MAINT DEFERRED THE PROB AND THE CREW DEPARTED; AFTER A DELAY WITH MAINT DOCUMENTS.

Narrative: ALL 4 HYD DEMAND PUMP FAULT LIGHTS ILLUMINATED DIMLY; BUT WOULD NOT ILLUMINATE BRIGHT. NOTIFIED MAINT VIA VOX AND ACARS. STATION MAINT SAID WOULD DEFER -- OK WITH CREW. HAD PROBS WITH RELEASE VERIFICATION NUMBERS WITH BOTH RELEASE AND MAINT DOCUMENT NUMBERS MATCHING ACARS. WE DID NOT LEAVE GATE UNTIL WE HAD ALL MAINT DOCS. SCANNED THE MAINT DOC AND IT LOOKED OK UNDER OUR RUSH TO MAKE SCHEDULED DEP TIME. INFLT; LOOKED AT IT CLOSER AND HAD CONCERNS THE ITEMS DEFERRED WERE NOT DESCRIBED COMPLETELY AND ACCURATELY. CONTACTED MAINT CTL VIA SAT VOX AND DISCUSSED. IT APPEARS DEFERRAL WAS NOT CORRECT AND PERHAPS NOT BEEN DEFERRABLE DUE TO 2 PUMPS IN THE SAME SYS HAVING A PROB. SYS OPERATED NORMALLY. IT APPEARED IT WAS A WARNING LIGHT INTENSITY PROB. CONTRIBUTING TO THE RUSHED FEELING WAS A 'FRIENDLY' COMPANY NOTE FROM THE CHIEF PLT STATING THE IMPORTANCE OF OUR TIME-CRITICAL FLT AND PLEASE DO WHAT WE CAN TO GET OUT ON TIME. EVEN THOUGH I KNOW WHAT IS REALLY RIGHT; SUBTLE PRESSURE HAS ITS WAY.

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 B777-200 flight crew at the gate at ord had cockpit indications of a hydraulic problem. Maintenance deferred the problem and the crew departed; after a delay with maintenance documents.