Plain English Meaning

A high-quality flight simulator on the ground that the FAA has approved for pilot training. Because it is more realistic than a basic trainer, you can log more of your training hours in it and use it for some required practice that would otherwise need to be done in an actual airplane.

Full Definition

An advanced aviation training device (AATD) is a ground-based flight training device approved by the FAA that meets a higher level of fidelity than a basic aviation training device (BATD). AATDs simulate aircraft systems, instruments, and flight characteristics with enough realism that the FAA permits credit for a greater number of training hours toward pilot certificates and , including , within limits set by the device's .