A320 flight crew has hydraulic system failure, declares emergency, lands at sea.

Attributes
ACN	570322
Time
Date	200301
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : geg.airport
State Reference	WA
Altitude	msl single value : 35000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zse.artcc tower : ord.tower
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Route In Use	arrival star : glasr
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time type : 646
ASRS Report	570322
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Experience	flight time last 90 days : 200 flight time total : 5500 flight time type : 601
ASRS Report	570324
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : hyd system low level warning other flight crewa other flight crewb
Resolutory Action	flight crew : declared emergency flight crew : landed in emergency condition none taken : anomaly accepted
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

While at cruise FL350, we got an ECAM for the green hydraulic system low level. The ECAM display page for the hydraulic leak system verified this with a schematic display. We accomplished the ECAM immediate action items and then referenced the flight manual for further information. We then contacted san francisco maintenance and dispatch through commercial radio for further resources and direction. After some troubleshooting with maintenance, we accepted the green system as lost for the remainder of the flight. With dispatch concurrence, we decided to continue to sea with WX basic VFR in sea and since we were by now just east of the jaksn intersection on the glasr 5 arrival sea. We contacted the purser and briefed her and directed her to lead a preparation for evacuate/evacuation on landing due to the chance of loss of directional control caused by a loss of nosewheel steering related to the system failure. We followed flight manual procedure with an uneventful landing in sea on runway 16L to a full stop on the runway centerline. We were then towed from the runway to a gate in sea where we turned the aircraft over to maintenance.

Original NASA ASRS Text

Title: A320 FLC HAS HYD SYS FAILURE, DECLARES EMER, LANDS AT SEA.

Narrative: WHILE AT CRUISE FL350, WE GOT AN ECAM FOR THE GREEN HYD SYS LOW LEVEL. THE ECAM DISPLAY PAGE FOR THE HYD LEAK SYS VERIFIED THIS WITH A SCHEMATIC DISPLAY. WE ACCOMPLISHED THE ECAM IMMEDIATE ACTION ITEMS AND THEN REFED THE FLT MANUAL FOR FURTHER INFO. WE THEN CONTACTED SAN FRANCISCO MAINT AND DISPATCH THROUGH COMMERCIAL RADIO FOR FURTHER RESOURCES AND DIRECTION. AFTER SOME TROUBLESHOOTING WITH MAINT, WE ACCEPTED THE GREEN SYS AS LOST FOR THE REMAINDER OF THE FLT. WITH DISPATCH CONCURRENCE, WE DECIDED TO CONTINUE TO SEA WITH WX BASIC VFR IN SEA AND SINCE WE WERE BY NOW JUST E OF THE JAKSN INTXN ON THE GLASR 5 ARR SEA. WE CONTACTED THE PURSER AND BRIEFED HER AND DIRECTED HER TO LEAD A PREPARATION FOR EVAC ON LNDG DUE TO THE CHANCE OF LOSS OF DIRECTIONAL CTL CAUSED BY A LOSS OF NOSEWHEEL STEERING RELATED TO THE SYS FAILURE. WE FOLLOWED FLT MANUAL PROC WITH AN UNEVENTFUL LNDG IN SEA ON RWY 16L TO A FULL STOP ON THE RWY CTRLINE. WE WERE THEN TOWED FROM THE RWY TO A GATE IN SEA WHERE WE TURNED THE ACFT OVER TO MAINT.

Data retrieved from NASA's ASRS site as of July 2007 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.