A319 flight crew has a TOGW mismatch between the 2 FMGC's.

Attributes
ACN	716763
Time
Date	200611
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : den.airport
State Reference	CO
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	A319
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
Experience	flight time last 90 days : 270 flight time total : 10000 flight time type : 800
ASRS Report	716763
Events
Anomaly	aircraft equipment problem : less severe non adherence : published procedure
Independent Detector	other flight crewa
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance

Narrative:

Got a message on mcdu that said FMGC 1/2 TOGW mismatch. Had the same message several weeks ago on another aircraft; and when I called maintenance on that occasion I was directed to return to the gate; where a 3 hour delay ensued which did not fix the problem; and I canceled the flight. Since that flight I discovered that the fix for that issue is relatively simple; and had been published in a company publication; but was not made part of the MEL procedure for a flight quantity indicator channel inoperative; which causes the subsequent message display. Nor was it made an additional procedure in the flight manual that I am aware of; but that doesn't matter. The issue is that it is not part of the MEL deferral procedure and has caused flight delays/cancellations that cost time and money. Why the procedure is not incorporated; I don't know; but upon getting this similar issue I used captain's authority/authorized to simply input manually the aircraft fuel weight; which got rid of the message; and we took off instead of calling maintenance; who might have had me return to the gate. I have notified maintenance of this omission and will also call the fleet technical support people.

Original NASA ASRS Text

Title: A319 FLT CREW HAS A TOGW MISMATCH BTWN THE 2 FMGC'S.

Narrative: GOT A MESSAGE ON MCDU THAT SAID FMGC 1/2 TOGW MISMATCH. HAD THE SAME MESSAGE SEVERAL WKS AGO ON ANOTHER ACFT; AND WHEN I CALLED MAINT ON THAT OCCASION I WAS DIRECTED TO RETURN TO THE GATE; WHERE A 3 HR DELAY ENSUED WHICH DID NOT FIX THE PROB; AND I CANCELED THE FLT. SINCE THAT FLT I DISCOVERED THAT THE FIX FOR THAT ISSUE IS RELATIVELY SIMPLE; AND HAD BEEN PUBLISHED IN A COMPANY PUB; BUT WAS NOT MADE PART OF THE MEL PROC FOR A FLT QUANTITY INDICATOR CHANNEL INOP; WHICH CAUSES THE SUBSEQUENT MESSAGE DISPLAY. NOR WAS IT MADE AN ADDITIONAL PROC IN THE FLT MANUAL THAT I AM AWARE OF; BUT THAT DOESN'T MATTER. THE ISSUE IS THAT IT IS NOT PART OF THE MEL DEFERRAL PROC AND HAS CAUSED FLT DELAYS/CANCELLATIONS THAT COST TIME AND MONEY. WHY THE PROC IS NOT INCORPORATED; I DON'T KNOW; BUT UPON GETTING THIS SIMILAR ISSUE I USED CAPT'S AUTH TO SIMPLY INPUT MANUALLY THE ACFT FUEL WT; WHICH GOT RID OF THE MESSAGE; AND WE TOOK OFF INSTEAD OF CALLING MAINT; WHO MIGHT HAVE HAD ME RETURN TO THE GATE. I HAVE NOTIFIED MAINT OF THIS OMISSION AND WILL ALSO CALL THE FLEET TECHNICAL SUPPORT PEOPLE.

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.