Hello,

As per the official notification released by the Indian Air Force:

1. Candidates who are born between 17th January 2000 to 30th December 2003 are eligible to apply.
2. Maximum Age – 21 years
3. Candidates must have PCM as their main subject and English with minimum 50% .
4. Or any Engineering stream diplomaThe upper age limit for candidates holding valid and current Commercial Pilot License issued by DGCA (India) is relaxable up to 26 years.
5. Candidates must be 20 to 26 years as on January  1, 2021( non technical staff)
6. Candidates below 25 years of age must be unmarried at the time of commencement of course
7. AFCAT Eligibility Criteria for Flying Duty

• Must have 60% with PCM and graduate student from university.
• Or be/ btech with atleast 60%

You must give the AFCAT exam to qualify.

https://afcat.cdac.in/AFCAT/CareerAsPerBranches.html

Visit this link and know all the criterias.

Hope this helps!!