Plain English Meaning

The control the pilot uses to set how much fuel is mixed with the air going into the engine. More fuel for takeoff and low altitudes, less fuel at higher altitudes where the air is thinner, and no fuel at all when shutting the engine down.

Full Definition

A cockpit control, typically a red knob or lever, that regulates the ratio of fuel to air delivered to the engine's cylinders. Moving it toward the rich position increases fuel flow relative to air; moving it toward the lean position decreases fuel flow. Pulling it fully out to idle cutoff stops fuel flow entirely and shuts the engine down.

Context Anchor

You encounter the mixture control during engine , , , , checks, checks, and when securing the after a or .