Colleges in Mumbai

I hope this link will help you :
https://www.quora.com/Is-IBS-Mumbai-good-for-doing-a-PGPM-in-marketing

Various courses are:
1. B.Tech Lateral Entry Scheme
2. AIME Certification
3. Graduation in study domain, etc.

http://www.ihmctan.edu/programs.html
IHMs are the leading places that everyone craves for and prepares well. It is not impossible but the focus on the basic things that they ask is must for anyone.
NCHMCT-JEE is the criteria that they ask for. You score shall matter a lot in addition to the 77.4 that you are mentioning.
http://nchm.nic.in/ has the details to make you apply. I fear that the last date was in March.
17th March to 3rd April I guess. Please check the NCHM website.

Dear,
AVSEC course is not open for anyone, you need referral from any of the organization registered with BCAS. Civil aviation security is under BCAS not under DGCA. You need to get employment with any airline or airport to get nominated for such course.

The placements were good, out of 100 students around 70 to 80 students were placed in campus placements. Companies like Crisil offered 5 lacs and Nomura offered 3.2 lacs.

You can refer http://aimsinstitute.in/admission_details.html

As the information is not available online, you should ask the institute directly:
http://iaa.edu.in/enaai/contact.php