On one school bus, the cotter pin may be missing from the tie rod castle nut on the front steer axle. As a result, the nut could loosen. If this happens, the tie rod could detach from the steering arm and cause a loss of steering control.
A loss of steering control could create the risk of a crash.
Daimler Truck North America (DTNA) will notify the owner by mail. The corrective actions for this recall are under development.