Just had our second ARC issued, this time by Part M. Previous issued by CAA - presumably since our maintainers weren't properly authorised at the time.
It's all been pretty seamless, Part M company has dealt with all the paperwork etc. About £80 for issue of most recent ARC.
Only anxieties have been around apparent tightening up of manufacturer lifed items.
We also had concerns around back to birth records as the earlier log books were missing however that doesnt seem to have caused any (visible) issues.