Narrative:

I was involved in an engine change on the #2 engine on a B757-200 aircraft. I was working a day shift on my regular day off; from my usual midnight shift routine. The #2 engine we were replacing was involved in an engine fire that resulted in extensive damage to the right wing. We started the procedure to remove the engine towards the end of the day-shift. Since I was not part of the regular day-shift crew and not too familiar with the engine change procedure; I took on a section of the engine change that no one else was working; and that was disconnection of the quick disconnects from the pylon. Since we started late in the shift; there was not too much accomplished before our shift ended and swing shift would continue where we left off. We went to sign off the work on the maintenance sard for work we accomplished and when I scanned for my section; I quickly glanced at the one liners for the pylon work and signed for the disconnection procedure; but failed to completely recognize the part of the content about capping the open lines on the quick disconnects. The usual time line for an engine change is the installation of a replacement engine as soon as the old engine is removed. I knew that the old engine was going to be out of service for tests and assumed a replacement engine would be installed as soon as the old engine was removed. Since I was working an off shift; I lost track of what transpired after the days actions and was not aware of any discrepancies associated with the day shift work.

Related reports:

Google
 

Original NASA ASRS Text

Title: A midnight shift Mechanic; working his regular day-off on Dayshift; reports about not capping the quick disconnect lines during a #2 engine change procedure on a B757-200.

Narrative: I was involved in an engine change on the #2 engine on a B757-200 aircraft. I was working a day shift on my regular day off; from my usual midnight shift routine. The #2 engine we were replacing was involved in an engine fire that resulted in extensive damage to the right wing. We started the procedure to remove the engine towards the end of the day-shift. Since I was not part of the regular day-shift crew and not too familiar with the engine change procedure; I took on a section of the engine change that no one else was working; and that was disconnection of the quick disconnects from the pylon. Since we started late in the shift; there was not too much accomplished before our shift ended and swing shift would continue where we left off. We went to sign off the work on the maintenance sard for work we accomplished and when I scanned for my section; I quickly glanced at the one liners for the pylon work and signed for the disconnection procedure; but failed to completely recognize the part of the content about capping the open lines on the quick disconnects. The usual time line for an engine change is the installation of a replacement engine as soon as the old engine is removed. I knew that the old engine was going to be out of service for tests and assumed a replacement engine would be installed as soon as the old engine was removed. Since I was working an off shift; I lost track of what transpired after the days actions and was not aware of any discrepancies associated with the Day shift work.

Data retrieved from NASA's ASRS site as of April 2012 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.