You can do below courses in Aeronautical engineering

1- Diploma course- You can do after your 10th or 12th class

2- B.E/B.Tech course- It is a UG course which you can do after completing your 12th class

3- M.E/M.Teh course- It is a PG course which you can do after completing your UG degree.

4- Doctoral degree courses- You can do after completing your PG.

Good Luck!!