Signaling your presence is one thing, conveying a clear message is another. When help is close, you need to quickly communicate your needs or intentions.
In this article, discover 4 essential codes and visual signals to communicate effectively with an aircraft, even without transmission equipment.
1. The SOS code in Morse
This is the universal distress signal. It can be emitted with lights, sounds, or even flags. It consists of three dots, three dashes, three dots (●●●―――●●●).
With flags, raise to the right for points and to the left for dashes. Repeat the signal until spotted. This method remains the most immediately recognized worldwide.
2. The ground-to-air code
This visual code uses 5 simple and universal symbols formed on the ground:
The symbols must measure at least 1 m wide by 6 m long, and be placed in a visible area of the sky, with a strong contrast to the ground.
3. Arm signals
When an airplane is close enough, you can use your body to convey a message. By positioning yourself in a visible way, perform the following gestures:
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Arms raised in a V: need help
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One arm raised, one arm lowered: no
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Arms parallel to the horizontal: yes
These simple gestures are understood by trained pilots and can confirm a ground-to-air message.
4. Improvised signs
If you have a fabric, a raft sail, or a poncho, draw the same symbols of the ground-to-air code and spread them on the ground.
Even a simple message like HELP, written large using stones, branches, or clothing, can suffice. The important thing is visibility and readability from the air.
Conclusion
Knowing how to convey a clear message can save your life in a hostile environment. With these simple techniques, even without a radio, you will be able to indicate your needs and guide rescuers effectively.
