Narrative:

I was informed that aircraft X was undergoing an A-2 check when it was discovered that the #2 engine oil filter screen was missing. It was determined that I had performed the last documented maintenance on this item. The following statement is my recollection of that event. On may/fri/02, aircraft X arrived at ZZZ with an advisory notice. Replacement of the #2 engine oil filter element, and the forwarding of the removed filter element to power plant engineering at our maintenance facility in ZZZ1. I removed the 32 engine oil filter and inspected it for carbon. Finding none, I replaced it with a new element and completed the installation. Later, after all engine work was accomplished, I ran both engines to check for leaks. None were noted. I have no explanation as to why there was no filter element installed on #2 engine of aircraft X on jun/tue/02, but I am sure that I replaced the one removed on may/fri/02.

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Original NASA ASRS Text

Title: A DC9-30 WAS DISPATCHED AND OPERATED IN NON COMPLIANCE WITH THE R ENG OIL FILTER SCREEN MISSING.

Narrative: I WAS INFORMED THAT ACFT X WAS UNDERGOING AN A-2 CHK WHEN IT WAS DISCOVERED THAT THE #2 ENG OIL FILTER SCREEN WAS MISSING. IT WAS DETERMINED THAT I HAD PERFORMED THE LAST DOCUMENTED MAINT ON THIS ITEM. THE FOLLOWING STATEMENT IS MY RECOLLECTION OF THAT EVENT. ON MAY/FRI/02, ACFT X ARRIVED AT ZZZ WITH AN ADVISORY NOTICE. REPLACEMENT OF THE #2 ENG OIL FILTER ELEMENT, AND THE FORWARDING OF THE REMOVED FILTER ELEMENT TO PWR PLANT ENGINEERING AT OUR MAINT FACILITY IN ZZZ1. I REMOVED THE 32 ENG OIL FILTER AND INSPECTED IT FOR CARBON. FINDING NONE, I REPLACED IT WITH A NEW ELEMENT AND COMPLETED THE INSTALLATION. LATER, AFTER ALL ENG WORK WAS ACCOMPLISHED, I RAN BOTH ENGS TO CHK FOR LEAKS. NONE WERE NOTED. I HAVE NO EXPLANATION AS TO WHY THERE WAS NO FILTER ELEMENT INSTALLED ON #2 ENG OF ACFT X ON JUN/TUE/02, BUT I AM SURE THAT I REPLACED THE ONE REMOVED ON MAY/FRI/02.

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.