Blacksheep, that's our problem. Even as licenced engineers we have to submit our repair schemes through tech services which then get signed off by Quality. Tech servs get their nod from Airbus, Boeing, RR etc through either direct from Tolouse, Seattle or Derby.
I feel that this somewhat undervalues our qualifications as licenced guys. After all, we're the ones who sign it off in the log. Having said that, if you sign it off in accordance with a tech services repair scheme, the onus is then on them and Quality. However I wouldn't know the recourse on how that would stand up in court as ultimately it's my signature on the CRS.