A B737-800 panel was replaced with the assistance of maintenance control and local lead technician. Later advised panel was incorrect due to modifications.

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Attributes
ACN	673364
Time
Date	200509
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
ASRS Report	673364
Person 2
Affiliation	company : air carrier
Function	maintenance : lead technician
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure non adherence : far
Independent Detector	other other : 3
Resolutory Action	none taken : detected after the fact
Consequence	other other
Factors
Maintenance	contributing factor : schedule pressure performance deficiency : logbook entry performance deficiency : installation performance deficiency : non compliance with legal requirements
Supplementary
Problem Areas	Aircraft Maintenance Human Performance Environmental Factor Chart Or Publication
Primary Problem	Maintenance Human Performance

Narrative:

On sep/thu/05; I removed and replaced modification 3024 as requested by local maintenance and maintenance control. After accomplishing operations checks with local maintenance assistance; system appeared to be working normally. After accomplishing operations checks; I later cleared logbook. Later I was made aware this specific panel might be subject to several modifications although there was no mention of this on the maintenance report or from maintenance control on the night of sep/thu/05. Placed too much emphasis on information provided by technician. Correct panel was installed in ZZZ on sep/tue/05.

Original NASA ASRS Text

Title: A B737-800 PANEL WAS REPLACED WITH THE ASSISTANCE OF MAINT CTL AND LCL LEAD TECHNICIAN. LATER ADVISED PANEL WAS INCORRECT DUE TO MODIFICATIONS.

Narrative: ON SEP/THU/05; I REMOVED AND REPLACED MODIFICATION 3024 AS REQUESTED BY LCL MAINT AND MAINT CTL. AFTER ACCOMPLISHING OPS CHKS WITH LCL MAINT ASSISTANCE; SYS APPEARED TO BE WORKING NORMALLY. AFTER ACCOMPLISHING OPS CHKS; I LATER CLRED LOGBOOK. LATER I WAS MADE AWARE THIS SPECIFIC PANEL MIGHT BE SUBJECT TO SEVERAL MODIFICATIONS ALTHOUGH THERE WAS NO MENTION OF THIS ON THE MAINT RPT OR FROM MAINT CTL ON THE NIGHT OF SEP/THU/05. PLACED TOO MUCH EMPHASIS ON INFO PROVIDED BY TECHNICIAN. CORRECT PANEL WAS INSTALLED IN ZZZ ON SEP/TUE/05.

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.