Narrative:

On oct/mon/04 at approximately XA30, I was performing line check and daily arj walkaround procedures and inspections on aircraft X on the ramp at gate in ZZZ. Before closing up the engine cowls, I checked all 4 engine oil levels, and added 1 quart of oil to engine #2. I then closed up the 4 engine cowlings and at this point may have inadvertently and mistakenly closed an oil can in the #2 engine cowling. I do not remember doing this, but may have had a momentary lapse in concentration. I do not remember seeing an oil can in this cowling but it may have been there previously, but it being dark, working with only a flashlight and the many tasks I performed on this aircraft, may have missed seeing it. As I stated, I don't remember leaving an oil can in the #2 engine cowling, and if I did, it certainly wasn't on purpose. However, if I did in fact leave this can, it was due to the amount and complexity of the work I performed on this aircraft and the fact that I did it in the dark. I regret that this incident has happened, but again, not sure in the responsible party.

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Original NASA ASRS Text

Title: AN ARJ85 WAS DISCOVERED TO HAVE AN OIL CAN LEFT IN #2 ENG COWLING. HAD PREVIOUS OVERNIGHT LINE CHK WHERE #2 ENG OIL WAS SVCED.

Narrative: ON OCT/MON/04 AT APPROX XA30, I WAS PERFORMING LINE CHK AND DAILY ARJ WALKAROUND PROCS AND INSPECTIONS ON ACFT X ON THE RAMP AT GATE IN ZZZ. BEFORE CLOSING UP THE ENG COWLS, I CHKED ALL 4 ENG OIL LEVELS, AND ADDED 1 QUART OF OIL TO ENG #2. I THEN CLOSED UP THE 4 ENG COWLINGS AND AT THIS POINT MAY HAVE INADVERTENTLY AND MISTAKENLY CLOSED AN OIL CAN IN THE #2 ENG COWLING. I DO NOT REMEMBER DOING THIS, BUT MAY HAVE HAD A MOMENTARY LAPSE IN CONCENTRATION. I DO NOT REMEMBER SEEING AN OIL CAN IN THIS COWLING BUT IT MAY HAVE BEEN THERE PREVIOUSLY, BUT IT BEING DARK, WORKING WITH ONLY A FLASHLIGHT AND THE MANY TASKS I PERFORMED ON THIS ACFT, MAY HAVE MISSED SEEING IT. AS I STATED, I DON'T REMEMBER LEAVING AN OIL CAN IN THE #2 ENG COWLING, AND IF I DID, IT CERTAINLY WASN'T ON PURPOSE. HOWEVER, IF I DID IN FACT LEAVE THIS CAN, IT WAS DUE TO THE AMOUNT AND COMPLEXITY OF THE WORK I PERFORMED ON THIS ACFT AND THE FACT THAT I DID IT IN THE DARK. I REGRET THAT THIS INCIDENT HAS HAPPENED, BUT AGAIN, NOT SURE IN THE RESPONSIBLE PARTY.

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.