*It is important to note that many simulators may contain specific features or abilities not explicitly stated in their level of certification. Every simulator, especially custom built designs, are able to be customized in order to fit any facility needs even if a desired level of certification does not necessarily require it. Any ambiguities with respect to the capabilities of the simulator are finalized in the sales contract and technical specifications document prior to the simulator deal closing.
The FTD is broken down into four categories, the Level 4, 5, 6, and 7. The FTD Level 4 is similar to the Cockpit Procedures Trainer (CPT), that is, devices that are used to practice basic cockpit procedures such as processing emergency checklists and general cockpit familiarization. The aerodynamic model is usually more generic in this model. This level does not technically require an aerodynamic model, but accurate systems modeling is required.
Level 4 FTDs are required to have at least one operational system. The NSPM will accomplish a functions check of all installed systems, switches, indicators, and equipment at all crew members' and instructors' stations, and determine that the flight deck (or flight deck area) design and functions replicate the appropriate airplane.