Hi, the eligibility criteria for getting into engineering is that you need to have 45% in PCM aggregate. So, as long as you manage to get it done there is nothing to worry about. For getting into aeronautical engineering you will have to give entrance exams as per your choice. If you want a college in your state you can choose state level exam or JEE Mains. Hope this helps. If you still have doubts feel free to comment.