Hi Tushar, you can find the list from the following link. You can even get nore informations like fee structure, course duration, exams accepted, etc. from the following link.

https://bschool.careers360.com/colleges/list-of-pgd-post-graduate-diploma-in-aviation-management-colleges-in-india

Hope this is helpful to clear your dilemma.

All the best for your future.