Plain English Meaning

A grounded training unit that copies a real aircraft's cockpit layout and switches well enough to practice procedures, but does not have to fly or feel like the real airplane in motion.

Full Definition

A level 4 Flight Training Device is an FAA-qualified ground-based training device that represents a specific aircraft's systems through functional cockpit panels and controls, but is not required to have aerodynamic flight modeling. It is approved for procedural training such as systems operation, checklist use, and instrument procedures, and may be used to log training credit toward certain and under .