Aircraft Maintenance requires a certification from DGCA which is the authority for this. There is no specific course for this. You could do an aeronautical engineering or aerospace engineering programme. Aeronautical does cover this as a part of the course. Or you can also do your B.Tech in Aeronautical, mechanical, electrical or electronics & communication too to get a job in the industry. With some experience, you get some relaxation in the certification from DGCA. You can also check its guidline wih the given below link.

Guidline

Here are the list of colleges also you can go through with the given below link.

AME Training Institute

Good Luck!