Duches Flyer / Whopity,
Thank you for your replies.
There does seem to be a lack of clarity on what the 'relating to the courses provided' means. Relevancy of instruction, as Whopity suggests, should be at the 'kind of course' level, rather than the 'aircraft type' level. Otherwise, for an ATO which provides courses in a number of different types, the CFI must have 500 hours instructional duties in each aircraft type! This could get absurd.
Duchess - - ironically, speaking with my 'CA' is exactly what brings me here! Unfortunately, the CA can interpret however they want, which in my case, seems to be 500 hours instructional duties in EACH type-of-aircraft we intend to offer!
Let's see if anyone else has come across this before!
cl12pv2s