Narrative:

Relay K10478 (current sensing relay) for left engine probe heat was replaced. B757 ipc lists a part #XXX1. Part #XXX2 was inadvertently ordered and installed on aircraft. When completing paperwork; I noticed that part number of installed part was #XXX2. This part number is not in ipc.

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Original NASA ASRS Text

Title: A B757 CURRENT SENSING RELAY FOR LEFT ENGINE PROBE HEAT WAS REPLACED WITH SAME TYPE OF UNIT BUT DIFFERENT DASH NUMBER NOT IN IPC.

Narrative: RELAY K10478 (CURRENT SENSING RELAY) FOR L ENG PROBE HEAT WAS REPLACED. B757 IPC LISTS A PART #XXX1. PART #XXX2 WAS INADVERTENTLY ORDERED AND INSTALLED ON ACFT. WHEN COMPLETING PAPERWORK; I NOTICED THAT PART NUMBER OF INSTALLED PART WAS #XXX2. THIS PART NUMBER IS NOT IN IPC.

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.