An airbus A-320 aircraft external power panel 108VU and light socket were swapped from another A-320...

Attributes
ACN	749049
Time
Date	200707
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	A320
Operating Under FAR Part	Part 121
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : airframe technician : powerplant
Experience	maintenance avionics : 16 maintenance technician : 21
ASRS Report	749049
Events
Anomaly	maintenance problem : improper maintenance
Resolutory Action	none taken : detected after the fact
Factors
Maintenance	performance deficiency : repair performance deficiency : installation
Supplementary
Problem Areas	Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

I was asked to rob aircraft X for the external power panel; 108VU; for aircraft Y. After doing so; I installed 108VU from aircraft X into aircraft Y. After receiving the external power not in use light socket; I replaced the light socket; which was the original problem for the panel from aircraft Y into the panel; and installed the panel in aircraft X. Four days later an external power problem arose on aircraft X. The problem was resolved by resetting an external power circuit breaker. No further external power problems existed for either aircraft X or aircraft Y; however it was determined that the panels swapped were not for the effectivity of the aircraft they were installed in. Two maintenance callouts for aircraft X and aircraft Y were created to swap the panels back to their original aircraft. I accomplished this task. Upon my rob of the panel from aircraft X; and subsequent swapping of panels; the effectivity issue did not occur to me; as a review of the applicable ipc reference showed the panel installation part numbers as being identical for both aircraft effectivities.

Original NASA ASRS Text

Title: AN AIRBUS A-320 ACFT EXTERNAL POWER PANEL 108VU AND LIGHT SOCKET WERE SWAPPED FROM ANOTHER A-320. THE ACFT EFFECTIVITY WAS MISREAD. PARTS NOT COMPATIBLE.

Narrative: I WAS ASKED TO ROB ACFT X FOR THE EXTERNAL PWR PANEL; 108VU; FOR ACFT Y. AFTER DOING SO; I INSTALLED 108VU FROM ACFT X INTO ACFT Y. AFTER RECEIVING THE EXTERNAL PWR NOT IN USE LIGHT SOCKET; I REPLACED THE LIGHT SOCKET; WHICH WAS THE ORIGINAL PROB FOR THE PANEL FROM ACFT Y INTO THE PANEL; AND INSTALLED THE PANEL IN ACFT X. FOUR DAYS LATER AN EXTERNAL PWR PROB AROSE ON ACFT X. THE PROB WAS RESOLVED BY RESETTING AN EXTERNAL PWR CIRCUIT BREAKER. NO FURTHER EXTERNAL PWR PROBS EXISTED FOR EITHER ACFT X OR ACFT Y; HOWEVER IT WAS DETERMINED THAT THE PANELS SWAPPED WERE NOT FOR THE EFFECTIVITY OF THE ACFT THEY WERE INSTALLED IN. TWO MAINT CALLOUTS FOR ACFT X AND ACFT Y WERE CREATED TO SWAP THE PANELS BACK TO THEIR ORIGINAL ACFT. I ACCOMPLISHED THIS TASK. UPON MY ROB OF THE PANEL FROM ACFT X; AND SUBSEQUENT SWAPPING OF PANELS; THE EFFECTIVITY ISSUE DID NOT OCCUR TO ME; AS A REVIEW OF THE APPLICABLE IPC REF SHOWED THE PANEL INSTALLATION PART NUMBERS AS BEING IDENTICAL FOR BOTH ACFT EFFECTIVITIES.

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.

An airbus A-320 aircraft external power panel 108VU and light socket were swapped from another A-320. The aircraft effectivity was misread. Parts not compatible.