A320 experiences loss of green hydraulic system fluid.

Attributes
ACN	701075
Time
Date	200606
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : zzz.tracon
State Reference	US
Altitude	msl single value : 27000
Environment
Flight Conditions	VMC
Aircraft 1
Controlling Facilities	tracon : zzz.tracon
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 200 flight time total : 7000 flight time type : 1800
ASRS Report	701075
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 200 flight time total : 15000 flight time type : 3000
ASRS Report	700961
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : ecam
Resolutory Action	flight crew : declared emergency
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

I was the PF; the autoplt was engaged; and we were cleared direct on the arrival. At about FL270 we received an ECAM that told us our green hydraulic system accumulator had a low quantity. We saw that the hydraulic page indication was in agreement with this ECAM. We followed the procedures; called maintenance. Maintenance talked to the passenger; the flight attendants; and ATC. We felt like everyone was in the loop and so we proceeded to ZZZ for the visual approach. As a precaution we declared an emergency. The ECAM procedure had us turn the left hydraulic pump back on just before lowering the gear; and the gear came down normally. We landed without incident. Good crew coordination and procedures; the training worked!

Original NASA ASRS Text

Title: A320 EXPERIENCES LOSS OF GREEN HYD SYS FLUID.

Narrative: I WAS THE PF; THE AUTOPLT WAS ENGAGED; AND WE WERE CLRED DIRECT ON THE ARR. AT ABOUT FL270 WE RECEIVED AN ECAM THAT TOLD US OUR GREEN HYD SYS ACCUMULATOR HAD A LOW QUANTITY. WE SAW THAT THE HYD PAGE INDICATION WAS IN AGREEMENT WITH THIS ECAM. WE FOLLOWED THE PROCS; CALLED MAINT. MAINT TALKED TO THE PAX; THE FLT ATTENDANTS; AND ATC. WE FELT LIKE EVERYONE WAS IN THE LOOP AND SO WE PROCEEDED TO ZZZ FOR THE VISUAL APCH. AS A PRECAUTION WE DECLARED AN EMER. THE ECAM PROC HAD US TURN THE L HYD PUMP BACK ON JUST BEFORE LOWERING THE GEAR; AND THE GEAR CAME DOWN NORMALLY. WE LANDED WITHOUT INCIDENT. GOOD CREW COORD AND PROCS; THE TRAINING WORKED!

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.