Narrative:

I came into work this morning to work some overtime and heard my supervisor and another individual discussing a possible overfly for an APU starter/generator. I saw the individual in the hallway going to quality control (qc) to do some research and he told me that I was the coordinator that changed the APU in december 2010. I went into our maintenance tracking program and I and confirmed that I was the coordinator that changed the APU. The APU and its starter generator are a mother child relationship. In other words the generator is a sub-component and derives its tracking from the APU. The process requires four [sign-off blocks]. The first step is to remove the starter generator. Once the generator is removed you must sign-off a block in maintenance tracking; only selecting the 'removed' box and leaving the 'install' block unchecked. Then the APU is removed and the new APU installed and again you will sign-off the second block selecting the remove and install blocks. The next step is to go into sub-inventory in maintenance tracking and go to the generator position and detach the generator that is now triple xd (XXX) [crossed-out]. This will create a black hole for the APU generator position. Once this is complete you will go back to the generator removal and select the magnify glass button next to the install block and search for the generator you removed. Once found; you will install that generator back onto the APU and sign-off the third [block item] and verify tracking. At this time we did not track the starter/generators on the G200; they had no life limits. I remember that the G200's generators were different then the rest of the fleet. I enquired if we followed the same process to change out these starter/generators. I did not get a clear answer so I treated the part action as a normal part change. On the other fleets it is a mother child relation. I thought it was like replacing an engine. We don't remove and reinstall the starter generators for aircraft engine changes because they are considered airframe items. We now are able to track APU generators with airframe time. The system has not been changed in maintenance tracking in order to accomplish this.

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Original NASA ASRS Text

Title: A Maintenance Coordinator reports he recorded the removal and installation of an APU Starter/Generator on a G-200 aircraft as a normal parts change; instead of entering the information into their Maintenance Tracking Program. He was later informed the APU Starter/Generator may have overflown its service time limits.

Narrative: I came into work this morning to work some overtime and heard my supervisor and another individual discussing a possible overfly for an APU Starter/Generator. I saw the individual in the hallway going to Quality Control (QC) to do some research and he told me that I was the Coordinator that changed the APU in December 2010. I went into our Maintenance Tracking Program and I and confirmed that I was the Coordinator that changed the APU. The APU and its starter generator are a mother child relationship. In other words the generator is a sub-component and derives its tracking from the APU. The process requires four [sign-off blocks]. The first step is to remove the starter generator. Once the Generator is removed you must sign-off a block in Maintenance Tracking; only selecting the 'Removed' box and leaving the 'Install' block unchecked. Then the APU is removed and the new APU installed and again you will sign-off the second block selecting the Remove and Install blocks. The next step is to go into sub-inventory in Maintenance Tracking and go to the generator position and detach the generator that is now triple Xd (XXX) [crossed-out]. This will create a black hole for the APU generator position. Once this is complete you will go back to the generator removal and select the magnify glass button next to the Install block and search for the generator you removed. Once found; you will install that generator back onto the APU and sign-off the third [block item] and verify tracking. At this time we did not track the starter/generators on the G200; they had no life limits. I remember that the G200's generators were different then the rest of the fleet. I enquired if we followed the same process to change out these starter/generators. I did not get a clear answer so I treated the part action as a normal part change. On the other fleets it is a mother child relation. I thought it was like replacing an engine. We don't remove and reinstall the starter generators for aircraft engine changes because they are considered airframe items. We now are able to track APU generators with airframe time. The system has not been changed in Maintenance Tracking in order to accomplish this.

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.