FAA Aviation Mechanic Airframe (AMA)Landing Gear SystemsMedium
An aircraft's braking system automatically releases and reapplies brake pressure to individual wheels during a heavy braking landing on a wet runway. This function is performed by the
- Aparking brake valve
- Banti-skid system
- Cbrake metering valve
- Dhydraulic fuse
Show answer & explanationAnswer & explanation
Correct answer: B. anti-skid system
The anti-skid system senses individual wheel speed and modulates brake pressure to prevent wheel lockup and skidding, maximizing braking efficiency especially on wet or icy runways.
Why the other options are wrong
- A. The parking brake valve locks brake pressure for parking, not modulation during landing.
- C. The metering valve controls the amount of pressure sent from pedal input, not automatic release/reapply.
- D. A hydraulic fuse isolates a line in case of leakage, unrelated to skid control.
Anti-Skid Braking System
A system that automatically modulates brake pressure to individual wheels to prevent skidding during heavy braking.
- Uses wheel-speed transducers to detect impending skid
- Releases brake pressure momentarily to restore rolling traction
- Improves stopping distance especially on wet/icy runways
Memory trick: Anti-skid pumps the brakes for you, like ABS in a car