What is the preferred action if there’s a defect on one car after air hose issues?

Setting out only the defective car is the preferred action if there’s a defect on one car after experiencing air hose issues. This action serves several purposes. First, it ensures the safety and efficiency of the entire train operation. By removing the defective car from the train, the crew can address and resolve the specific issue without further complicating the situation with other cars.

Additionally, this choice prevents any potential risk that a defective car might pose to the integrity of the train as a whole. Leaving the entire train in place or continuing the journey could lead to safety hazards or operational inefficiencies, especially if the defect might affect other cars. Similarly, inspecting all connected cars, while important in some situations, may not be necessary if the issue is clearly isolated to one car. This would also delay the journey unnecessarily. Therefore, by setting out the defective car, the crew takes decisive and responsible action to maintain the train's operational safety and integrity.