Narrative:

I was assigned to remove and replace a fuel flow governor on aircraft's #2 engine. I was the mechanic and another mechanic was [performing] the rii (required inspection item). I [later] became aware that the mechanic who performed the rii was not certified on B-757 aircraft. I notified my supervisor and aircraft maintenance control immediately and the aircraft was taken out of service.

Google
 

Original NASA ASRS Text

Title: B757 Airline Mechanic reported a procedural violation regarding a non qualified technician performing maintenance on aircraft.

Narrative: I was assigned to remove and replace a fuel flow governor on aircraft's #2 engine. I was the Mechanic and another Mechanic was [performing] the RII (Required Inspection Item). I [later] became aware that the Mechanic who performed the RII was not certified on B-757 aircraft. I notified my Supervisor and aircraft Maintenance Control immediately and the aircraft was taken out of service.

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.