It doesn't matter it only really matters on what qualification the engineer has that signs it off.
I have changed brake packs and tyres on my commercial type because the ginger had hurt his hand. I did all the grunt work and he gave helpful tips and drank tea and signed the tech log after abusing my handy work with locking wire.
And alot of engines changed in maint organisations will be changed by a none licensed fitter then it will be inspected by a licensed engineer then a dupe inspection done by another.
But I do take your point bingo about it can't be a permit type. On G-INFO its down as a EASA CofA expiring the end of this month.
Last edited by mad_jock; 3rd Oct 2011 at 15:07.