Narrative:

Aircraft X needed a fuel cap installed due to it missing from aircraft. Maintenance received a radio call reported by the fueler that a fuel cap was missing and thus applied the proper crew deviation list (cdl) application and thus deferred the item legally. Sometime later another radio call came in indicating that the captain would like the log cleared as there is now a fuel cap installed. The tech was surprised at this news as he did not install this mystery cap since he applied the cdl earlier to address the problem. After investigating the issue he found out that the fueler installed an uncontrolled fuel cap on the aircraft. [Found] out that fuel caps are being purged from [company] spare stock with certain part numbers effected. The issue at hand here with a viable question is; how and why does a subcontractor have access to fuel caps that are uncontrolled floating around in their hands? These are all [different aircraft model] parts that are controlled by the aircraft maintenance department. The [maintenance technician] removed the installed fuel cap and maintained the deferred status of the fuel cap.

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Original NASA ASRS Text

Title: Maintenance Technician reported that an uncontrolled part was installed on an Airbus.

Narrative: Aircraft X needed a fuel cap installed due to it missing from aircraft. Maintenance received a radio call reported by the fueler that a fuel cap was missing and thus applied the proper Crew Deviation List (CDL) application and thus deferred the item legally. Sometime later another radio call came in indicating that the Captain would like the log cleared as there is now a fuel cap installed. The tech was surprised at this news as he did not install this mystery cap since he applied the CDL earlier to address the problem. After investigating the issue he found out that the fueler installed an uncontrolled fuel cap on the aircraft. [Found] out that fuel caps are being purged from [company] spare stock with certain part numbers effected. The issue at hand here with a viable question is; how and why does a subcontractor have access to fuel caps that are uncontrolled floating around in their hands? These are all [different aircraft model] parts that are controlled by the Aircraft Maintenance Department. The [maintenance technician] removed the installed fuel cap and maintained the Deferred Status of the Fuel Cap.

Data retrieved from NASA's ASRS site 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.