If only the aileron channel is not working, it is probably a broken connection from the decoder chip to the connector where you plug in the aileron. It might be worth taking the case off and looking at the PC board and see if there is a crack in the copper strip connecting them. If you have a scope (or know someone who does) look at the outputs at the decoder chip and see if the pulse is there. If it is the fix should be simple and easy to do. I'd not risk a high dollar plane to this receiver but it could do well for your every day beater plane.