Parking brake activation is accomplished by which action?

• A. By pulling toe brakes only
• B. By applying toe brakes while simultaneously pulling and turning the parking brake handle 90 degrees
• C. By pulling the emergency handle
• D. By pressing a switch on the overhead

Answer: (B)

Activating the parking brake requires a deliberate two-action sequence: apply the toe brakes to apply the wheel brakes, then pull and turn the parking brake handle 90 degrees to set the lock that holds the brakes in place. The toe brakes do the normal braking, and the parking brake handle locks in hydraulic pressure so the brakes stay applied after you release the pedals. The 90-degree twist is a safeguard to prevent accidental engagement or release, so you must intentionally perform both steps. Pulling the toe brakes alone wouldn’t seat the parking brake, pulling an emergency handle or pressing an overhead switch wouldn’t engage this parking brake mechanism, since those actions serve different systems or purposes.