How long is the orange polypropylene trail line on a HELO?

• A. 105 ft
• B. 90 ft
• C. 120 ft
• D. 150 ft

Answer: (A)

Trail lines provide a visible, controllable reference for the deck crew during helicopter operations, helping guide and control the aircraft as it taxis, lands, or departs. The orange polypropylene material is chosen for its visibility, strength, and buoyancy, so it’s easy to spot and handle in all conditions.

The standard length of 105 feet is set to balance reach and safety: it’s long enough for line handlers stationed along the flight deck to maintain proper distance from the helicopter and to manage the line without crowding the rotor wash or getting tangled in deck equipment. At the same time, it isn’t so long that the line drags on the deck or fouls gear or the aircraft’s downwash. Shorter lengths would restrict reaching the handlers or risk inadequate control, while longer lengths could introduce other hazards.

That’s why 105 feet is the best answer.