Which role is required to monitor clearance when shorter towbars are used?

• A. Wing walker
• B. Designated observer
• C. Safety officer
• D. Ground crew

Answer: (B)

Shorter towbars reduce the clearance margin during tow operations, so a dedicated observer is needed to watch the path and ensure nothing comes too close to the aircraft or ground. This person is positioned with a clear view of the nose gear, surrounding surfaces, and any potential obstacles, and they communicate with the tow operator to stop or adjust if a risk appears. Their focused role is to monitor clearance continually as the aircraft moves, especially during turns or when the towbar’s geometry brings surfaces closer to the ramp, doors, or equipment. Wing walkers supervise wingtip clearance and general wing area, safety officers oversee overall safety, and ground crew provide support, but they don’t specialize in ongoing clearance monitoring during tow with shortened towbars.