If you are asking about admission into IIAE. Then, first of all, you must meet the eligibility criterion of IIAE.

A candidate who has passed 10+2 examination with PCM (Physics, Chemistry, and Mathematics) or has completed three years approved diploma in any of the streams is eligible for admission in AME programme.

Selection process Includes  all India admission entrance examination popularly known as AIAEE (All India AME entrance examination) exclusively for the Indian Institute of Aircraft Engineering (IIAE) registered candidates only. This is conducted through an Online and offline Examination mode at 20 centres all over India in the month of APRIL or MAY every year. Students also get the opportunity to select their preferred examination date in online examination mode within the allowed dates. Based on the examination results and all India merit list is published online in the institute website (www.iiae.in ) with intimation to the selected and qualified students on their registered E-mail address