Narrative:

Changed seat assembly in accordance with troubleshooting and fault identify manual, which idented seat part #XXX to install. Checked aircraft xyz status illustrated parts catalog XXX. Idented seat as correct effectivity. Problem idented to engineering change order modification status for seat XXX. I was not aware of modification status with effectivity of seat XXX.

Google
 

Original NASA ASRS Text

Title: B757 WAS DISPATCHED IN NON COMPLIANCE WITH AN UNMODIFIED PAX SEAT INSTALLED DUE TO THE ILLUSTRATED PARTS CATALOG NOT BEING UPDATED.

Narrative: CHANGED SEAT ASSEMBLY IN ACCORDANCE WITH TROUBLESHOOTING AND FAULT IDENT MANUAL, WHICH IDENTED SEAT PART #XXX TO INSTALL. CHKED ACFT XYZ STATUS ILLUSTRATED PARTS CATALOG XXX. IDENTED SEAT AS CORRECT EFFECTIVITY. PROB IDENTED TO ENGINEERING CHANGE ORDER MODIFICATION STATUS FOR SEAT XXX. I WAS NOT AWARE OF MODIFICATION STATUS WITH EFFECTIVITY OF SEAT XXX.

Data retrieved from NASA's ASRS site as of July 2007 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.