Training / Qualification
Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural Published Material / Policy
Human Factors; Incorrect / Not Installed / Unavailable Part
I was assigned a structure repair I have never done before and in an area I have never worked. I laid out the repair and asked the crew chief if that looked about right he said yes. I continued on with installing fastener holes using a drill stop until the repair was ready to install. I got clearance to install and installed the doubler. I came into work the next day to find out I had inadvertently drilled into the frame behind the doubler.
On an MD83; when making a structure repair; the repair person inadvertently drilled into the frame behind the doubler.