MAT

Try some better colleges at 90%ile. The best college for MAT is Great lakes Christ University

These exams are to get admission in IIMs or business schools for MBA.

Dear Pandey,
I think you should score more marks to get admission into a good business schools.
All the best.

Yes, you can make it. MAT score is valid for two years.
All the best.

Dear Avishek Banerjee,
To get seats in various institutions is based on your scores. You can apply for SIESCOM and wait positively because sometimes things will happen miraculously.
All the best.

Yes, NIIT is good for MBA if you are from engineering field, otherwise work hard to crack CAT and you will get good colleges.
You can get admission in the below mentioned colleges:
1. FMS – Delhi.
2. IIITM- Gwalior.
3. TISS – Mumbai.
4. SCMHRD – Pune.
5. Christ – Bangalore.
6. PES University – Bangalore.

For making a career in aviation industry, you can go for MBA in aviation management from one of these top colleges of India:
IIM - all states : This college without a doubt best for MBA.
Other than this:
Andhra Pradesh Aviation Academy
UPES, Dehradun
Narsee Monjee, Mumbai

You can try for ITM Mumbai, Christ University Bangalore Alliance Bangalore and MIT Pune.