Hello Aspirant!
Following are the best aircraft maintenance engineering colleges in India:

Bharat Institute of Aeronautics, Patna

School for Aircraft Maintenance Engineering

Academy of Carver Aviation

NDC Institute of Aircraft Maintenance Engineering

Hindustan College of Engineering Technology (HIET), Chennai

Southern College of Engg and Technology, Chalakudy

Pune Institute of Aviation Technology, Pune

Hindustan Academy of Aircraft Maintenance Engineers, Lucknow

Indian College of Aeronautics, New Delhi

Indraprastha College of Aeronautics Engineering

Aeronautical Training Academy, Lucknow

Rajiv Gandhi Memorial College of Aeronautics, Jaipur

Star Aviation Academy, Haryana

Institutes of Aircraft Maintenance Engineering, Aurangabad