These kinds of trainings are only mend for assisting you. You have to prepare a lot as intrview process are quite difficult in aviation sector.
So you have to work hard a lot of yourself. Institute like wings aviation is only for providing a side assistance in preparation, they guide in a proper path.
So that you understand what interviewer exactly ask. This training academy is good for aviation trainings, but placement percentage is not that much high. But the main role is of your hard and smart work.