When are dual brakes utilized?

When are dual brakes utilized?

• A. Less braking friction is desired
• B. More braking friction is desired
• C. During takeoff only
• D. When tire wear is high

Answer: (B)

Dual brakes are used when more braking friction is desired. By having two braking assemblies on a wheel, the system can generate greater friction against the tire and runway, increasing deceleration and shortening stopping distance. This setup also provides redundancy—if one brake path has an issue, the other still contributes braking force. You’d want this increased friction in situations like heavy landings or when maximum braking performance is needed. The other options don’t fit: braking isn’t about takeoff, tire wear doesn’t alone dictate using dual brakes, and the goal isn’t to have less friction.

Dual brakes are used when more braking friction is desired. By having two braking assemblies on a wheel, the system can generate greater friction against the tire and runway, increasing deceleration and shortening stopping distance. This setup also provides redundancy—if one brake path has an issue, the other still contributes braking force. You’d want this increased friction in situations like heavy landings or when maximum braking performance is needed. The other options don’t fit: braking isn’t about takeoff, tire wear doesn’t alone dictate using dual brakes, and the goal isn’t to have less friction.