Translations:KAVAN Alpha 1500 V2 - Instruction manual/103/en
Ailerons control the bank angle. If you gently move the aileron stick to the left, your model will start to bank to the left as long as you are holding the stick. Now if you return the aileron stick to the centre position (neutral), your model will maintain the bank. If you want to resume a straight flight you have to move the aileron stick to the opposite direction.