A CRJ700 technician reports replacing and signing for #1 control unit. A review of the logbook discovered later work changed entry from #1 to #2 control unit.

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Attributes
ACN	670054
Time
Date	200508
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Regional Jet 700 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
ASRS Report	670054
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
Events
Anomaly	aircraft equipment problem : less severe maintenance problem : improper documentation non adherence : far non adherence : published procedure
Independent Detector	other other : 1
Resolutory Action	none taken : detected after the fact
Factors
Maintenance	performance deficiency : logbook entry performance deficiency : non compliance with legal requirements
Supplementary
Problem Areas	Chart Or Publication Maintenance Human Performance Aircraft
Primary Problem	Maintenance Human Performance

Narrative:

While reviewing the maintenance log for a repeat discrepancy on aircraft; I noticed that someone had changed my signoff from a #2 control unit to a #1. We have the copy at station and I verified this. Maintenance was performed on this system after me by identify #xxxxxx. The serial number I installed was #XXX.

Original NASA ASRS Text

Title: A CRJ700 TECHNICIAN RPTS REPLACING AND SIGNING FOR #1 CTL UNIT. A REVIEW OF THE LOGBOOK DISCOVERED LATER WORK CHANGED ENTRY FROM #1 TO #2 CTL UNIT.

Narrative: WHILE REVIEWING THE MAINT LOG FOR A REPEAT DISCREPANCY ON ACFT; I NOTICED THAT SOMEONE HAD CHANGED MY SIGNOFF FROM A #2 CTL UNIT TO A #1. WE HAVE THE COPY AT STATION AND I VERIFIED THIS. MAINT WAS PERFORMED ON THIS SYS AFTER ME BY IDENT #XXXXXX. THE SERIAL NUMBER I INSTALLED WAS #XXX.

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.