Narrative:

On sep/sat/06; ZZZ maintenance received a call from maintenance control that aircraft X would be in ZZZ at XA10 hours and would require a re-inspect for work performed by non erj-700 maintenance personnel. When I arrived at the aircraft the captain informed me that the wing anti-ice fault that was previously cleared by non erj-700 personnel had returned. I called maintenance control and while discussing which MEL applied; was informed by the captain that icing conditions existed. Maintenance control then decided to swap aircraft X with aircraft Y so that the wing anti-ice discrepancy could be worked. Back in the office; I searched for the replacement sensor in the ipc. Due to outside influences and daily distrs in the lead office; I inadvertently copied the wrong part number down for the temperature sensor. I retrieved from stores what I believed was an outboard temperature sensor when in fact what I had was an inboard temperature sensor. Removal and replacement went according to the amm. While completing the entries in maintenance computer for removal and replacement of the temperature sensor; maintenance computer flagged the part numbers as not being interchangeable. I looked up the part again in the ipc and this was when I discovered that I; in fact; had looked at the wrong part number listing; and had inadvertently installed the wrong sensor. Realizing the severity of the situation; I immediately notified the temporary lead in charge and called maintenance control to notify them of the situation.

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Original NASA ASRS Text

Title: A CRJ700 WAS DISPATCHED WITH THE INCORRECT OUTBOARD WING TEMP SENSOR INSTALLED.

Narrative: ON SEP/SAT/06; ZZZ MAINT RECEIVED A CALL FROM MAINT CTL THAT ACFT X WOULD BE IN ZZZ AT XA10 HRS AND WOULD REQUIRE A RE-INSPECT FOR WORK PERFORMED BY NON ERJ-700 MAINT PERSONNEL. WHEN I ARRIVED AT THE ACFT THE CAPT INFORMED ME THAT THE WING ANTI-ICE FAULT THAT WAS PREVIOUSLY CLRED BY NON ERJ-700 PERSONNEL HAD RETURNED. I CALLED MAINT CTL AND WHILE DISCUSSING WHICH MEL APPLIED; WAS INFORMED BY THE CAPT THAT ICING CONDITIONS EXISTED. MAINT CTL THEN DECIDED TO SWAP ACFT X WITH ACFT Y SO THAT THE WING ANTI-ICE DISCREPANCY COULD BE WORKED. BACK IN THE OFFICE; I SEARCHED FOR THE REPLACEMENT SENSOR IN THE IPC. DUE TO OUTSIDE INFLUENCES AND DAILY DISTRS IN THE LEAD OFFICE; I INADVERTENTLY COPIED THE WRONG PART NUMBER DOWN FOR THE TEMP SENSOR. I RETRIEVED FROM STORES WHAT I BELIEVED WAS AN OUTBOARD TEMP SENSOR WHEN IN FACT WHAT I HAD WAS AN INBOARD TEMP SENSOR. REMOVAL AND REPLACEMENT WENT ACCORDING TO THE AMM. WHILE COMPLETING THE ENTRIES IN MAINT COMPUTER FOR REMOVAL AND REPLACEMENT OF THE TEMP SENSOR; MAINT COMPUTER FLAGGED THE PART NUMBERS AS NOT BEING INTERCHANGEABLE. I LOOKED UP THE PART AGAIN IN THE IPC AND THIS WAS WHEN I DISCOVERED THAT I; IN FACT; HAD LOOKED AT THE WRONG PART NUMBER LISTING; AND HAD INADVERTENTLY INSTALLED THE WRONG SENSOR. REALIZING THE SEVERITY OF THE SITUATION; I IMMEDIATELY NOTIFIED THE TEMPORARY LEAD IN CHARGE AND CALLED MAINT CTL TO NOTIFY THEM OF THE SITUATION.

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.