Class rating

In aviation, 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 license and aircraft class training. What aircraft require a type rating is decided by the local aviation authority. Almost all single engine piston (SEP) or multi engine piston (MEP) single pilot aircraft can be flown without a "type rating", but are covered by a "class rating" instead. 
There are seven categories of aircraft, which may be further subdivided into two or more classes: