You need to have PCm as subject in class12th with minimum 75% aggregate marks if you wish to receive admission from IIT, NIT and GFTIs.

For other private colleges scores above 50%aggregate marks is enough. You need to apear for Jee Main and Jee Advanced exam for above mentioned college. List of all Aeronautical engineering college and accepted exams below.

https://engineering.careers360.com/colleges/list-of-aeronautical-engineering-colleges-in-india