Hi Aakash Gupta,

Aircraft Manufacturing and Maitainence Engineering is a sub-branch of Aeronautical Engineering. Your basic education is on designing and constructing the aircraft. It also includes maintaining the aircraft in terms of control, maintain and repair of the aircraft. For more details on the course please refer the following website:

https://engineering.careers360.com/articles/aircraft-manufacturing-and-maintenance-engineering-0

Good Luck!!!