When letters are used for registration mark combinations shall not be used which might be confused with urgent signals for example ? Progress > AIM
![exemple question 107](https://www.furious-atpl.com/documents/IMG_107.jpg)
When letters are used for the registration mark combinations shall not be used which might be confused with urgent or distress signals for example ?
![exemple question 108](https://www.furious-atpl.com/documents/IMG_108.jpg)
Any aircraft deriving its lift in flight chiefly from aerodynamic force is ?
![exemple question 109](https://www.furious-atpl.com/documents/IMG_109.jpg)
![exemple question 110](https://www.furious-atpl.com/documents/IMG_110.jpg)
![exemple question 111](https://www.furious-atpl.com/documents/IMG_111.jpg)
![exemple question 112](https://www.furious-atpl.com/documents/IMG_112.jpg)
![exemple question 113](https://www.furious-atpl.com/documents/IMG_113.jpg)
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