Flight crew of A320 experience dual FMGS failure during VMC arrival to destination airport.

Attributes
ACN	639033
Time
Date	200412
Day	Mon
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : phx.airport
State Reference	AZ
Altitude	msl single value : 17000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zab.artcc
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 260 flight time total : 12000 flight time type : 3500
ASRS Report	639033
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 other flight crewa other flight crewb
Resolutory Action	none taken : anomaly accepted other
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Dual FMGC failure experienced during descent into the phx area. VMC conditions helped significantly to accomplish a safe landing.

Original NASA ASRS Text

Title: FLT CREW OF A320 EXPERIENCE DUAL FMGS FAILURE DURING VMC ARR TO DEST ARPT.

Narrative: DUAL FMGC FAILURE EXPERIENCED DURING DSCNT INTO THE PHX AREA. VMC CONDITIONS HELPED SIGNIFICANTLY TO ACCOMPLISH A SAFE LNDG.

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.