What must be done first during an inbound train inspection?

During an inbound train inspection, the first step should be to secure cars with hand brakes. This action is crucial because it ensures that the train remains stationary and safe while the inspection is conducted. By applying the hand brakes, the crew prevents any accidental movement, which is essential for ensuring safety during the inspection process. This practice minimizes risks associated with inspecting a moving or unsecured train and provides a stable environment for team members to perform their duties.

Placing the automatic HO, applying the air exhausts, or releasing the angle cock are additional important steps in the procedure, but they should occur after securing the train with hand brakes. Prioritizing safety and stability by securing the train prevents potential hazards during the inspection.