BBA Scope

What exactly is you job profile? If you want to apply for B.Ed, you can certainly do so, but as far as teaching is concerned, you will be only eligible to apply for teaching in class I-VIII.
A graduate with a B.Ed is not considered eligible to apply for teaching in Higher Secondary Schools or Colleges.
To be eligible to teach in colleges/universities, apart from holding a Master's degree, you will have to qualify National Eligibility Test for Lectureship or the State Eligibility Test for Lectureship, both conducted under the regulation of University Grant Commission.
I would suggest you go for MBA after BBA as MBA does not restricts you to any particular sector and you can avail a lot of opportunities after completing MBA course from a good institute.

Yes you can go for aviation after graduation.
There are job opportunities in aviation industry some of which may suit your interests and qualifications includes - Jobs for Aeronautical Engineers with aircraft manufacturers; Jobs for Air Hostess for smart and young women who love to do a lot of travelling and believe in hard work. Several companies offer lucrative pay packages and other facilities for the pleasure of their employees in this field of work; Jobs in Airline Ticketing that includes reservation and booking of flight tickets for the customers. You will also have to help them in planning their route; Customer Service Jobs which has the duty of looking after various problems and requirements of the clients. You may need to pursue further studies or take specific airline training courses based on your choice of job profile. If you want to start off at a managerial level, you would need an MBA degree. In case you want to take up a job right after your graduation, then design a proper resume of your qualifications and experience. You can take help of professional resume writers. Some online job sites like naukri.com, monster.com, bixee.com, etc. provide these services.

BBA is really one of the best courses in Bachelor's degree and many students do MBA after this which is now become a tradition and in MBA there are many students who are from the departments such as Engineering, BCA, BA, B.Sc. etc. The crowd in MBA is also very high so it is really a good option to choose something other than the traditional course which can be deemed helpful in the long duration of time. It may be anything which is related to your passion or your area of interest. Designing is one such field in which there is lots of scope and less crowd in comparison to MBA. So, if someone really wishes to go in the designing field if he/she can do this and achieve great things in life apart from a traditional course. So, if you want to do something different after BBA then you should try to find out what you are passionate about and work on it which will really give you the satisfaction and you may be at the top in your selected field.
All the best.

Doing parallel courses while preparing for a better career is always useful. Some of the courses which I would suggest you are as follows:
1. Affiliate Marketing
2. Search Engine Optimization
3. Online Marketing
4. E-Marketing
5. E-Commerce Marketing
6. Retail Management
7. Diploma in business proficiency
8. Leadership study
9. Diploma in Consumer Behaviour
10. Diploma in Stress Management
11. Data Analytics
12. Cloud Storage Concepts
13. Product Promotion Concepts
Apart from these:
1. International Labour Laws
2. EXIM Courses
3. Foreign language
These will help you in one way or another.
Try to concentrate on BBA and try to learn the parallel course online. There are certain websites like Alison's, Shaw Academy, etc., which provide quality online education for management students.

After pursuing BBA from Dinabandhu Andrew Institute of technology and Management, there are various placement opportunities in India as well as abroad. You can apply for various job profiles such as customer service associates, sales executive, sales manager, retail manager in organized retail stores, Store Manager in leading retail outlets, Food chain outlets. You can also work as operation Executive, Assistant Human Resource Manager, Finance Analyst, Customer Relationship Manager, Product Manager and Quality Manager in SMEs. You can also work with Startups and various MNCs.
Speaking about abroad placement opportunities you can apply for various courses which provide training for few months and well-paid jobs in countries like New Zealand, Canada, UK, Australia, USA, Thailand, Singapore, etc.