TravellingMackem
Winger
Certain sections of them are sealed and others aren’t. So there is scope to do some maintenance on sections but not to the entirety. Same goes for the engines too. I’m sure there’s some logic behind why they seal which parts and that will include consideration for what needs what type of maintenanceMakes sense.
I'm not clear about seals, it's the way most championships operate, but that tends to be with supplied parts, this is F1, the pinnacle of the sport, and despite what we hear it runs large on trust, on self-regulation over many aspects, subject to checks and observers. I'd be amazed if they are sealed and can't be worked on, but I'm not sure, F1 changes it's rules at such a rate...