Business Management Studies

Please check for your eligibility to apply for a course in Aircraft Maintenance Engineering from Indian Institute of Aeronautical Science at the link provided below. Details regarding admission process and placement data is also mentioned in the link.
https://www.shiksha.com/engineering/course/aircraft-maintenance-engineering-indian-institute-of-aeronautical-science-jessore-road-kolkata-55328

You should target a score higher than 90%.

MBA is not offered in IIM-A. It offers PGPM.
Refer the link to know the details:https://www.shiksha.com/mba/course/post-graduate-program-in-management-indian-institute-of-management-ahmedabad-vastrapur-1653.

Since you are in the minority quota, there are fair chances that you may get through for the MS programme. Keep your fingers crossed.

Admission to the MBA program of the University will take place through the Admission Committee for Professional Courses (ACPC) of the Government of Gujarat. Therefore, interested candidates will have to follow the procedure of ACPC as per their announcements.

Please refer to the link provided below for a detailed comparison between these two institutes for a PG course in Fashion Design. You should be able to compare various features of each college which should help you decide which college is better and the one you would want to opt for study. Regards. https://www.shiksha.com/resources/college-comparison-298817-256283.