I am reading my JAR-FCL and in paragraph 1.220 b) it says:
"Type ratings for aeroplanes shall be established for:
(1) each type of multi-pilot aeroplane; or
(2) each type of single-pilot multi-engine aeroplane fitted with turbo-prop or turbojet engines; or
(3)
each type of single-pilot single-engine fitted with a turbojet engine; or
(4) any other type of aeroplane if considered necessary..
In my opinion, Pilatus PC6 as you know, is a single-pilot e single-turbojet, so I think it should be a TYPE rating, not a CLASS one.
Don't you think...
Ciao (Bye bye) !!!
Cruz