Narrative:

After installation of EPR probe #2 engine, the removed probe was unintentionally left on top of #2 engine inside the cowl. The aircraft flew from ZZZ-dfw where dfw mechanics discovered probe with minor cowl damage evident. No other defects found. The cowl was repaired, part was removed, and aircraft returned to service. Some of the factors of why the removed probe was left on engine: 1) WX conditions -- snow, sleet, rain, lighting, darkness. 2) not enough help -- other mechanics busy. 3) distrs -- on delay and maintenance tower calling every 10 mins, dealing with air carrier engineers concerning sealant issue on probe. 4) I checked my work area after completion of probe installation, but failed to notice the probe on top of engine.

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Original NASA ASRS Text

Title: AN MD90 WAS DISPATCHED IN NON COMPLIANCE WITH A REMOVED ENG INST PROBE LEFT INSIDE THE COWLING INCURRING DAMAGE TO THE COWLING.

Narrative: AFTER INSTALLATION OF EPR PROBE #2 ENG, THE REMOVED PROBE WAS UNINTENTIONALLY LEFT ON TOP OF #2 ENG INSIDE THE COWL. THE ACFT FLEW FROM ZZZ-DFW WHERE DFW MECHS DISCOVERED PROBE WITH MINOR COWL DAMAGE EVIDENT. NO OTHER DEFECTS FOUND. THE COWL WAS REPAIRED, PART WAS REMOVED, AND ACFT RETURNED TO SVC. SOME OF THE FACTORS OF WHY THE REMOVED PROBE WAS LEFT ON ENG: 1) WX CONDITIONS -- SNOW, SLEET, RAIN, LIGHTING, DARKNESS. 2) NOT ENOUGH HELP -- OTHER MECHS BUSY. 3) DISTRS -- ON DELAY AND MAINT TWR CALLING EVERY 10 MINS, DEALING WITH ACR ENGINEERS CONCERNING SEALANT ISSUE ON PROBE. 4) I CHKED MY WORK AREA AFTER COMPLETION OF PROBE INSTALLATION, BUT FAILED TO NOTICE THE PROBE ON TOP OF ENG.

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.