An A320 developed a hydraulic leak in a landing gear door retraction valve upon landing. The crew cl...

Attributes
ACN	636333
Time
Date	200411
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : phx.airport
State Reference	AZ
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	636333
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : ecam
Resolutory Action	flight crew : overcame equipment problem other
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Just after turning off runway 7R in phx, we received an ECAM warning of green hydraulic reservoir low pressure. We exited the runway and were cleared across runway 7L. After clearing runway 7L we were able to see that we were indeed low on green hydraulic fluid. I made the decision based on the amount of fluid left to taxi the aircraft to a straight ahead spot requiring little or no steering inputs or braking. I chose a spot which would not interfere with airport traffic or cause any delays to others. In short, we were completely out of everyone's way. We never lost nosewheel steering or normal braking in the process. Once we got the aircraft stopped and the parking brake set, we were able to see the fluid level had dropped even more and we would have to be towed in to gate. We shut down both engines and made the necessary arrangements. After a period of time, we were connected to our air carrier tug. Air carrier maintenance personnel installed the ship's gear pins which we passed through the first officer's window, and we were uneventfully towed to gate. After exiting the aircraft, we were able to see an actuator on the green hydraulic system that opens and closes the main gear doors had ruptured, slowly emptying the green system.

Original NASA ASRS Text

Title: AN A320 DEVELOPED A HYD LEAK IN A LNDG GEAR DOOR RETRACTION VALVE UPON LNDG. THE CREW CLRED ALL RWYS AND HAD THE ACFT TOWED TO THE GATE.

Narrative: JUST AFTER TURNING OFF RWY 7R IN PHX, WE RECEIVED AN ECAM WARNING OF GREEN HYD RESERVOIR LOW PRESSURE. WE EXITED THE RWY AND WERE CLRED ACROSS RWY 7L. AFTER CLRING RWY 7L WE WERE ABLE TO SEE THAT WE WERE INDEED LOW ON GREEN HYD FLUID. I MADE THE DECISION BASED ON THE AMOUNT OF FLUID LEFT TO TAXI THE ACFT TO A STRAIGHT AHEAD SPOT REQUIRING LITTLE OR NO STEERING INPUTS OR BRAKING. I CHOSE A SPOT WHICH WOULD NOT INTERFERE WITH ARPT TFC OR CAUSE ANY DELAYS TO OTHERS. IN SHORT, WE WERE COMPLETELY OUT OF EVERYONE'S WAY. WE NEVER LOST NOSEWHEEL STEERING OR NORMAL BRAKING IN THE PROCESS. ONCE WE GOT THE ACFT STOPPED AND THE PARKING BRAKE SET, WE WERE ABLE TO SEE THE FLUID LEVEL HAD DROPPED EVEN MORE AND WE WOULD HAVE TO BE TOWED IN TO GATE. WE SHUT DOWN BOTH ENGS AND MADE THE NECESSARY ARRANGEMENTS. AFTER A PERIOD OF TIME, WE WERE CONNECTED TO OUR ACR TUG. ACR MAINT PERSONNEL INSTALLED THE SHIP'S GEAR PINS WHICH WE PASSED THROUGH THE FO'S WINDOW, AND WE WERE UNEVENTFULLY TOWED TO GATE. AFTER EXITING THE ACFT, WE WERE ABLE TO SEE AN ACTUATOR ON THE GREEN HYD SYS THAT OPENS AND CLOSES THE MAIN GEAR DOORS HAD RUPTURED, SLOWLY EMPTYING THE GREEN SYS.

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.

An A320 developed a hydraulic leak in a landing gear door retraction valve upon landing. The crew cleared all runways and had the aircraft towed to the gate.