Originally Posted by
Whopity
FRTOL is not a rating!
Correct - which makes this especially cheeky.
Adding a new radio licence to your Part-FCL licence (which, to be honest, isn't a common thing to do as I suspect 99% of people will have it on there when they get their licence initially) involves the CAA re-issuing the licence.
When they re-issue a licence, they do a ratings check, costing you £20 extra...