Practice question

Before coupling a converter dolly to the rear trailer, what should you do to the rear trailer?

  1. Leave it free to roll so it can align itself
  2. Secure it with brakes or chocks and check that it is at the correct height
  3. Raise the landing gear fully before coupling
  4. Open all rear shut-off valves

Answer: B — Secure it with brakes or chocks and check that it is at the correct height

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