Definition
Friction-based braking devices fitted to the main landing gear wheels, operated by the pilot to slow the airplane during the landing roll, taxi, and ground maneuvering. Most light airplanes use hydraulically actuated disc brakes controlled by toe pedals on the rudder pedals, with each pedal operating the brake on its respective side independently.
Plain English
The brakes built into the main wheels of the airplane. The pilot presses the top of the rudder pedals with the toes to slow down on the ground, just like pressing a brake pedal in a car — except there is one for the left wheel and one for the right wheel.
Context Anchor
Used during taxi, parking, after touchdown on landing, and during an aborted takeoff. In a turbulent-air landing, they should be used carefully only after the airplane is firmly on the runway.
Why Pilots Care
Applying wheel brakes at the right moment and pressure prevents runway overrun while preserving directional control, particularly in crosswinds or gusty conditions.
Intuition Check
Wheel brakes are not brakes for slowing the airplane in the air. They work on the landing gear wheels after the airplane is on the ground.
Example Sentence 1
After touchdown, she held the nosewheel off the runway as long as possible before lowering it and applying gentle wheel brakes to slow to taxi speed.
Example Sentence 2
In gusty crosswind landings, the pilot delayed wheel brake application until the nosewheel was on the ground and directional control was secure.