To make a player controlled airplane tilt is easier since you have to press a button for the actions to start, and if using a controller you can use the input axis as reference for the angle, but what about AI/NPC controlled airplanes? I’m stuck on it for four days.
You use Vector3.SignedAngle to get the direction the NPC needs to turn to head towards its goal. You can then use the angle in the same way you would use input values. So a negative value to turn/lean left and a positive value to turn/lean right.