Airlines do have iPads, but not for navigation. And if both of ours pack up as well as the internal systems fail, we will still be OK. DR still works OK. Also old fashioned Mk. I eyeball is still valid, like today with a visual approach. A/P, A/T, F/D off - as it should be. Not a drop of FMS, DME or anything else. Just old fashioned TLAR. A bit like being in a bug-smasher.
But if if you do use a bloody iPad, why bother with the actual nasty, expensive flying bit? Just send a damn drone up, programmed to follow a pre-programmed route, record what it flew over and replay it ad nauseum. Job done. You don't even have to leave home.
So if I get this right, iPads must be used by PPL's to avoid controlled airspace. Well if that is the case, I'll suggest that anybody infringing controlled airspace should be imprisoned, because they have no excuse. No wonder private flying is doomed. An own goal scored by incompetents.
PM