Aircraft Simulator(Flight Training Equipment) is
A combination of Cockpit instrument that Is identical in appearance and function as the actual aircraft, a visual system with wide field of view for added realism, a motion system to provide ride quality identical to the actual flight, and a computer system that makes it all possible.
It has the benefits not available to the training with the actual aircraft, such as economic advantage, safety, environmental(noise, smoke) and also provide tactical training in case of emergency situation in a controlled environment and as such, there are increase in interest in simulator development and operation worldwide.
A few example for procedure and standard for evaluating Aircraft Simulator Qualification would be a manual by International Civil Aviation Organization(ICAO), and AC 120-40C, AC 120-63 by US Federal Aviation Administration(FAA). The simulator is classified by class A,B,C,D by their use, and the qualification suggests method of certifying/evaluating and the procedure and standard as well. Class D is the highest class given to the equipment that is almost identical to the actual aircraft.