You'll have to check your local regs. and I know this doesn't really help, but in NZ microlight ( up to 544 kg incidentally,and this can include variable pitch, retractable gear, 140 kt machines - I have one flying as a microlight, beats the pants of a 172 ! ) hours can be used to a maximum of 10 P.1 hrs towards the ISSUE of a PPL, but after that, i.e. having got the licence, then we just count everything in the logbook towards our total, but whether a prospective employer will accept them tho, is another issue, I had a friend try to join a major flag carrier who refused to accept his P.1 u/s hours ( i.e. as co-pilot doing the landing) and so he didn't have the required P.1.