In the Indian Air Force you can join the Aeronautical Engineering Branch. Following are the criteria for this:

Eligibility
The applicant must be currently studying in Pre-final year of BE / BTech degree course. There must be No backlog / arrears of papers of previous semesters at the time of SSB Testing.

On completion of degree, minimum 60% of marks in aggregate in all papers put together are mandatory.

Age –
18 to 28 years (at the time of commencement of course)

Nationality –
Indian

Marital Status –
Candidates below the age of 25 years should be unmarried