Nope thats not how it reads for public transport FTL scheme's it reads for 28 days blocks. So as you move 1 day on the previous 27 must not have more than 100 hrs flown in them.
And the FIE said to ignore the 28days limit.
But yet again it shows that there is cross information being fed to FI's by FIE, CFI's etc. And unfortunatly if you ask the CAA for ruling they will refuse to do it.
Anyway we will see how things pan out after the new european agency get there teeth into the rules regarding flight instruction.
MJ