Wigglyamp -
You need the actual data package from the original applicant in order to do the work, so you ensure the work actually complies with what was approved
Can one not get the package from the national CAA? They must have a copy of it, to have approved it in the first place?
Partly, what I was getting at is that one needs
both the paperwork pack, and the file reference from the national CAA. The latter is needed in case the job was done off the logbooks, so to speak.