判断正误True or False：如果转弯 ECU 探测到故障，或 3 号液压系统不可用时，系统转为减震模式，这样前轮就可以自由转动，然后飞行员可以通过差动刹车和差动推力来保持地面方向控制。If a failure is detected by the steering ECU or hydraulic system no. 3 is lost, the system reverts to shimmy-damping mode which allows free castering of the nosewheel. The pilot then maintains ground directional control through differential braking and differential thrust.