An A320 flight crew experienced an ECAM for green system hydraulic. They followed the QRH procedure;...

Attributes
ACN	811558
Time
Date	200811
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 35000
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 250 flight time total : 18000 flight time type : 1800
ASRS Report	811558
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 170 flight time total : 7500 flight time type : 1100
ASRS Report	811557
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : ecam
Resolutory Action	flight crew : landed in emergency condition flight crew : declared emergency
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Approximately 2 hours into flight got ECAM for green system low reservoir quantity. Per ECAM; turned off ptu and #1 engine driven hydraulic pump. Green system quantity stabilized above amber zone. At this point; ECAM changed to green system low pressure. After discussion with first officer; decided not to follow ECAM (turn on #1 engine driven pump) because the original ECAM was for 'low reservoir quantity;' indicating fluid leak. Decided to declare an emergency and continue to ZZZ. Passed along relevant information to ATC (need extra time for gear extension and need tow-in after landing). Briefed cabin crew and passenger on what to expect. Airplane did everything it was supposed to do per green system-out procedures. Good support received from ATC; dispatch and ZZZ. Supplemental information from acn 811557: low quantity indication for green system hydraulics ECAM. Followed ECAM procedure and secured the green system. Captain declared emergency and we continued to ZZZ because it was the closest suitable airport at the time. We coordinated with dispatch and ATC to ensure everyone was ready for our arrival. Procedure called for a manual gear extension and a tow off the runway because of inoperative nosewheel steering. We landed without incident and completed the tow-in checklist. The aircraft was inspected and towed back to the gate.

Original NASA ASRS Text

Title: AN A320 FLIGHT CREW EXPERIENCED AN ECAM FOR GREEN SYS HYD. THEY FOLLOWED THE QRH PROCEDURE; DECLARED AN EMERGENCY; COORDINATED WITH DISPATCH AND MAINTENANCE; AND LANDED WITHOUT INCIDENT.

Narrative: APPROX 2 HRS INTO FLT GOT ECAM FOR GREEN SYS LOW RESERVOIR QUANTITY. PER ECAM; TURNED OFF PTU AND #1 ENG DRIVEN HYD PUMP. GREEN SYS QUANTITY STABILIZED ABOVE AMBER ZONE. AT THIS POINT; ECAM CHANGED TO GREEN SYSTEM LOW PRESSURE. AFTER DISCUSSION WITH FO; DECIDED NOT TO FOLLOW ECAM (TURN ON #1 ENG DRIVEN PUMP) BECAUSE THE ORIGINAL ECAM WAS FOR 'LOW RESERVOIR QUANTITY;' INDICATING FLUID LEAK. DECIDED TO DECLARE AN EMER AND CONTINUE TO ZZZ. PASSED ALONG RELEVANT INFO TO ATC (NEED EXTRA TIME FOR GEAR EXTENSION AND NEED TOW-IN AFTER LNDG). BRIEFED CABIN CREW AND PAX ON WHAT TO EXPECT. AIRPLANE DID EVERYTHING IT WAS SUPPOSED TO DO PER GREEN SYSTEM-OUT PROCS. GOOD SUPPORT RECEIVED FROM ATC; DISPATCH AND ZZZ. SUPPLEMENTAL INFO FROM ACN 811557: LOW QUANTITY INDICATION FOR GREEN SYSTEM HYDS ECAM. FOLLOWED ECAM PROC AND SECURED THE GREEN SYSTEM. CAPT DECLARED EMER AND WE CONTINUED TO ZZZ BECAUSE IT WAS THE CLOSEST SUITABLE ARPT AT THE TIME. WE COORDINATED WITH DISPATCH AND ATC TO ENSURE EVERYONE WAS READY FOR OUR ARR. PROC CALLED FOR A MANUAL GEAR EXTENSION AND A TOW OFF THE RWY BECAUSE OF INOP NOSEWHEEL STEERING. WE LANDED WITHOUT INCIDENT AND COMPLETED THE TOW-IN CHKLIST. THE ACFT WAS INSPECTED AND TOWED BACK TO THE GATE.

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.

An A320 flight crew experienced an ECAM for green system hydraulic. They followed the QRH procedure; declared an emergency; coordinated with dispatch and maintenance; and landed without incident.