My point is that, on my reading, it’s not possible to breach proposed 91.275. That’s why I gave the analogy of a rule requiring an aircraft to be flown during hours of daylight or darkness.
An aircraft is always flying “under” either the VFR or the IFR. There are no other alternatives. It may be that the aircraft is flying in breach of those rules, but it’s nonetheless flying “under” either the VFR of the IFR.
Perhaps they meant to say “in accordance with” either the VFR or the IFR ....
Last edited by Lead Balloon; 19th Apr 2018 at 22:37.