You can check the list of top AME Colleges by following the given link : https://engineering.careers360.com/colleges/list-of-engineering-colleges-in-India?f%5B0%5D=sm_course_offered%3AAircraft%20Manufacturing%20and%20Maintenance%20Engineering&sort_filter=pop

As far as AME Degree is concerned , it is a highly reputious degree and will be highly demanded in the future times .So , you need not to worry about the future scope . Just go for it.

Best regards