Chartered Accountant

CA is a professional certification, which can not be deemed equivalent to graduation or post-graduation degree. ICAI allows an Indian CA to sit for foreign countries Charted Accounting Professional bodies examination in mutually signed agreements. You may refer to ICAI website for further details:
www.icai.org.

Yes, it is true that you can do CA without giving the example CPT (Common Proficiency Test was the first level of Chartered Accountancy examinations). For such that you have a need to score 55% in your graduation. And thereafter you can take admission in CA inter.

Hello,
If you want my advice then I will suggest you go for an MBA is the best option for you. Please feel free to Revert.

Yes, you can apply for the same as you have cleared CPT.

You can not write CPT entrance exam for joining B.Com course, but for admission in CA, you can take the exam.

Studying abroad is a good idea, if you can afford it. If you are extremely tight on finance or does not have enough resources then you are better of studying in India, at a top school.

CPT stands for Certified Phlebotomy Technician, A course that is not offered at Bombay Flying club.
Since you have already completed your diploma in mechanical you are eligible for admission in Aircraft Maintenance engineering course or CPL that is Commercial Pilot License.
For any further details you can visit the college website.