PPL SEP - 12 hours of flight time - need clarification

[Mach Jump]

(4) details on pilot function, namely PIC, including solo, SPIC and PICUS time, co-pilot, dual, FI or FE;

Ok. I'm convinced.

Although it's not as elegant as a specific definition, I accept that (4) above amounts to the same thing, in that it effectively limits 'flight time' to some form of crew function.

Thanks for everyone's input, particularly as it's such an obscure point.

I hope the OP appreciates everyone's efforts.

MJ