An A319 flight crew experienced loss of both FMS systems in cruise flight. They diverted to another airport; and when advised of weather delays; declared an emergency to expedite their arrival.

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Attributes
ACN	769325
Time
Date	200801
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 37000
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	common carrier : air carrier
Make Model Name	A319
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 : 180 flight time total : 12000 flight time type : 3000
ASRS Report	769325
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : diverted to another airport flight crew : landed in emergency condition flight crew : declared emergency
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Lost both FMGC's at cruise after phone patch with dispatch and maintenance tried reset. Unsuccessful; diverted to ZZZ1; ATC informed us 30 min hold; declared emergency; took vectors. Landing uneventful; given new aircraft; went to ZZZ2.

Original NASA ASRS Text

Title: AN A319 FLT CREW EXPERIENCED LOSS OF BOTH FMS SYSTEMS IN CRUISE FLIGHT. THEY DIVERTED TO ANOTHER ARPT; AND WHEN ADVISED OF WEATHER DELAYS; DECLARED AN EMERGENCY TO EXPEDITE THEIR ARRIVAL.

Narrative: LOST BOTH FMGC'S AT CRUISE AFTER PHONE PATCH WITH DISPATCH AND MAINT TRIED RESET. UNSUCCESSFUL; DIVERTED TO ZZZ1; ATC INFORMED US 30 MIN HOLD; DECLARED EMER; TOOK VECTORS. LNDG UNEVENTFUL; GIVEN NEW ACFT; WENT TO ZZZ2.

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.