CNFSimulator.AATD high level trainer is a general multi-type advanced aviation training device developed by CnTech according to CAAC MH/T9011-2021 advanced aviation training equipment inspection specification and FAA AC61-136B standard. At present, it has been adapted to Cessna C172S and Diamond DA42NG, etc. It can meet the training or technical research needs of the aviation school and training institution to use one set of equipment to complete the training or technical research of single and double engine models simultaneously. According to the regulatory requirements of FAR 61-65, the use of AATD can deduct 20 hours of instrument time in flight training of instrument class; In accordance with the document requirements of CCAR141-R3, future flight schools can also use AATD for instrument flight training, and CNFSimulator.AATD is a domestic autonomous equipment specially developed to meet this demand.