There are many college in Tamil Nadu which have Aeronautical Engineering branch, few top colleges are below:

1. Madras Institute of Technology, Chennai
2. Kumaraguru College of Technology, Coimbatore
3. Kalasalingam University, Virudhunagar
4. Adhiyamaan College of Engineering, Hosur

You can check all the Tamilnadu colleges which have Aeronautical branch:

Tamil Nadu Engineering Colleges (Aeronautical Branch)