Narrative:

I was changing some acoustic panels on the #2 engine. While installing them; the apex tip I was using to install them broke; so I went to get a new one. I returned with the new tip and continued from where I thought I had left off and finished torquing the panels in place. The aircraft was still in work when my shift was completed. Days later; the engine was run for leak/vibration check. During this check; one of the screws that I had installed to hold the acoustic panel in place had come loose and FOD'ed the engine; damaging the blades and the abrasive shroud. This damage led to the engine being replaced. I take full responsibility for the incident.

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Original NASA ASRS Text

Title: MECHANIC IS INFORMED THAT ONE OF THE SCREWS HE USED TO REPLACE THE ACOUSTIC LINER PANELS ON THE NOSE INLET COWL OF THE B737; #2 ENGINE; HAD COME LOOSE DURING AN ENGINE RUN; CAUSING BLADE; SHROUD; AND FOD DAMAGE. ENGINE WAS SUBSEQUENTLY REPLACED.

Narrative: I WAS CHANGING SOME ACOUSTIC PANELS ON THE #2 ENG. WHILE INSTALLING THEM; THE APEX TIP I WAS USING TO INSTALL THEM BROKE; SO I WENT TO GET A NEW ONE. I RETURNED WITH THE NEW TIP AND CONTINUED FROM WHERE I THOUGHT I HAD LEFT OFF AND FINISHED TORQUING THE PANELS IN PLACE. THE ACFT WAS STILL IN WORK WHEN MY SHIFT WAS COMPLETED. DAYS LATER; THE ENG WAS RUN FOR LEAK/VIBRATION CHK. DURING THIS CHK; ONE OF THE SCREWS THAT I HAD INSTALLED TO HOLD THE ACOUSTIC PANEL IN PLACE HAD COME LOOSE AND FOD'ED THE ENG; DAMAGING THE BLADES AND THE ABRASIVE SHROUD. THIS DAMAGE LED TO THE ENG BEING REPLACED. I TAKE FULL RESPONSIBILITY FOR THE INCIDENT.

Data retrieved from NASA's ASRS site as of May 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.