After performing a FMS-2 upgrade; mechanic was informed he may have loaded the incorrect software on their A319. Pilot reported noticing aircraft not reporting properly.

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Attributes
ACN	814051
Time
Date	200810
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	A319
Flight Phase	ground : maintenance
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
ASRS Report	814051
Person 2
Affiliation	company : air carrier
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : work cards contributing factor : briefing performance deficiency : testing performance deficiency : scheduled maintenance
Supplementary
Problem Areas	Maintenance Human Performance Aircraft Chart Or Publication
Primary Problem	Maintenance Human Performance

Narrative:

On or about late night shift; oct/08; performed FMS 2+ upgrade for aircraft X. Although; I followed all task cards in loading software and verified correct software through software control document. It has been brought to my attention that I had possibly loaded the wrong FMS 2+ software for this aircraft. Pilot noticed aircraft not reporting properly.

Original NASA ASRS Text

Title: AFTER PERFORMING A FMS-2 UPGRADE; MECHANIC WAS INFORMED HE MAY HAVE LOADED THE INCORRECT SOFTWARE ON THEIR A319. PILOT REPORTED NOTICING AIRCRAFT NOT REPORTING PROPERLY.

Narrative: ON OR ABOUT LATE NIGHT SHIFT; OCT/08; PERFORMED FMS 2+ UPGRADE FOR ACFT X. ALTHOUGH; I FOLLOWED ALL TASK CARDS IN LOADING SOFTWARE AND VERIFIED CORRECT SOFTWARE THROUGH SOFTWARE CTL DOCUMENT. IT HAS BEEN BROUGHT TO MY ATTN THAT I HAD POSSIBLY LOADED THE WRONG FMS 2+ SOFTWARE FOR THIS ACFT. PLT NOTICED ACFT NOT RPTING PROPERLY.

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.