KC-46 Tow Practice Test

Setting the parking brakes begins with applying the service brakes by depressing the brake pedals (toe brakes) to put some brake pressure in the system. Next, pull the parking brake lever to engage the parking brake, which locks the brakes in place and holds the aircraft. Finally, release the brake pedals so normal brake pressure isn’t maintained while the parking brake is engaged. This order ensures the parking brake latches securely and can hold the aircraft without relying on hydraulic pressure from the pedals. If you skip applying the service brakes or release the pedals before the parking brake is set, the parking brake may not seat properly or could release unexpectedly.