And PA28181, you have filed a FPL for flying in Class D - you filed an abbreviated flight plan by talking to ATC about your intentions on the radio and requesting transit.
Yes I did say that.
of course the RTF chatter prior to entering it has always been sufficient, and is all that is needed, so why persist in writing ambiguous "rules"
I still think that CAA docs, like CAP694 should make it clear when stating FPL's MUST be filed, but elsewhere says "you don't really have to do this, do this instead. They should not make what appear set in stone rules, that are contradicted elsewhere in their publications like "Air Law" etc.