What type of knot is used for securing an airplane with a rope?

• A. Bowline
• B. Clove hitch
• C. Half hitch
• D. Reef knot

Answer: (A)

When tying down an airplane, you want a knot that creates a secure, fixed loop at the end of the rope and resists slipping under load, so it stays tied even with wind and movement and can be untied afterward without a fight. The bowline does exactly that: it forms a reliable fixed loop that remains secure when tension is applied and is easy to untie after being loaded. This makes it well suited for securing to an aircraft tie-down point or anchor.

The other knots don’t provide the same dependable behavior in this situation. A clove hitch can work around a post, but it tends to slip or loosen when the load shifts or the rope flexes, which isn’t reliable for aircraft tie-downs. A half hitch is simple but not secure enough on its own for a serious load; it can fail or loosen under vibration or movement. A reef knot (square knot) is great for joining rope ends, but it can capsize or come undone under uneven or fluctuating loads, making it unsuitable for securing an airplane.