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.