Narrative:

October 2013; late night; I was assigned to perform an engine wash with two other mechanics on an md-82 aircraft. I prepared the #1 engine for washing operation and after completion I reconnected the lines and removed the wash ring. The aircraft departed on time the next morning. On the following day; the aircraft returns to ZZZ and I was assigned to perform an a-check inspection with mechanic Y. I began the inspection with #1 engine; followed by #2 engine. After closing the cowling on #2 engine; I was interrupted for an aircraft move; and a #2 main tire change. I thought that I had completed the #2 engine inlet inspection. I must have missed it. I realize how easy it is to get distracted. From now on I will take the inspection paperwork with me and check the items as I perform them. Interruptions.

Google
 

Original NASA ASRS Text

Title: Two Aircraft Maintenance Technicians (AMTs) were informed that a wash nozzle had not been removed from the inlet of #2 Engine on an MD-82 aircraft; after completing an Engine Wash Card.

Narrative: October 2013; late night; I was assigned to perform an engine wash with two other mechanics on an MD-82 aircraft. I prepared the #1 Engine for washing operation and after completion I reconnected the lines and removed the wash ring. The aircraft departed on time the next morning. On the following day; the aircraft returns to ZZZ and I was assigned to perform an A-Check Inspection with Mechanic Y. I began the inspection with #1 Engine; followed by #2 Engine. After closing the cowling on #2 Engine; I was interrupted for an aircraft move; and a #2 main tire change. I thought that I had completed the #2 Engine Inlet Inspection. I must have missed it. I realize how easy it is to get distracted. From now on I will take the inspection paperwork with me and check the items as I perform them. Interruptions.

Data retrieved from NASA's ASRS site as of July 2013 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.