UPES Dehradun was pioneered as a successful university in two fields, one of which was obviously the energy specific concentrations and the other was the aerospace department. Having lived in a hostel owned by one of the retired IIT engineer who did his graduation in this field and then went on to teach at UPES, I think it would be fair to say that from his recollections and experiences that were mentioned by him to me, the department is quite good.
Since you are applying for Aviation Management, I would assume you are an experienced executive and understand the equal risks and equal merits of going on an education venture anywhere. Do consider the recent reviews from actual students and alumni of this branch.