Definition
Internal representations a pilot builds and maintains of the aircraft's state, position, systems, and surrounding environment, used to anticipate what is happening, what will happen next, and how the aircraft will respond to control inputs or changing conditions.
Plain English
The picture in your head of what the airplane is doing, where it is, and what it will do next. You use that picture to stay ahead of the airplane instead of reacting to it.
Context Anchor
Seen in FAA discussions of aircraft control, decision-making, and learning how different flight conditions affect the airplane.
Derivation
From the Latin mentalis (of the mind) and modulus (a small measure or pattern). A mental model is literally a small working pattern of the real thing, kept in the mind and updated as conditions change.
Why Pilots Care
Pilots who maintain accurate mental models react faster and more correctly when the situation changes, reducing the chance of loss of control or poor decisions.
Grounding Statement
On approach, your mental model includes your altitude, distance from the runway, configuration, wind, and what the airplane will do if you reduce power -- all held together as one working picture.
Intuition Check
Do not think of mental models as daydreams or guesses. In aviation, a mental model is a working understanding that should match what the airplane is actually doing.
Example Sentence 1
When the controller issued an unexpected reroute, the pilot paused to update his mental model before responding.
Example Sentence 2
By updating her mental models during the approach, the pilot adjusted power early and maintained a stable descent path.