What is aircraft maintenance and management engineering? What is the course duration?

It is same as engineering. It's a 4-year program and in this courses, you will learn how to maintain an aircraft and its management. You will also get a chance to do a detailed study of helicopters.

AME means looking after the maintenance of helicopters and aeroplanes. To ensure they work properly and are at par with the safety standards. Its duration is 4 years.