A Jaa licence person flying a Kingair does not need a TR, but you do need a class rating.
A Class rating is an allowance to fly a certain group of aircraft that require training common to all aircraft within the group.
A Type rating is specified if a particular aircraft requires additional specialized training beyond the scope of initial Licence and aircraft class training.
A class rating allows you to fly a kingair single man crew or a two man crew. If you have two man crew, flying a king air on a JAA licence, and only the command has the rating, when you cannot log the hours in the second seat. You will be classed as an air observer.