Narrative:

Task card was completed without removal of the CSD oil cooler. There was confusion in reference to if the cooler must be changed or should be changed. Thus the cooler was not changed. The steps were north/a'ed. There was no inspection stamp adjacent to the signoffs. The aircraft has been in service for over 1 week without any defects.

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Original NASA ASRS Text

Title: A B737-400 HAD A CSD UNIT REPLACED PER JOB CARD PROC. THE CSD OIL COOLER WAS NOT REPLACED.

Narrative: TASK CARD WAS COMPLETED WITHOUT REMOVAL OF THE CSD OIL COOLER. THERE WAS CONFUSION IN REF TO IF THE COOLER MUST BE CHANGED OR SHOULD BE CHANGED. THUS THE COOLER WAS NOT CHANGED. THE STEPS WERE N/A'ED. THERE WAS NO INSPECTION STAMP ADJACENT TO THE SIGNOFFS. THE ACFT HAS BEEN IN SVC FOR OVER 1 WK WITHOUT ANY DEFECTS.

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.