Group X personal (technical trade)
Person those(only male) are 10+2 in science stream (physics and mathematics) they are eligible for this only. they are also called technician in air force .
They work in all the technical realated fields subjected to their trade and system eg. Aircraft systems, ground systems.
Brief introduction of group Y personal ( non technical trade)
Person those (only male) are passed their 10+2 in any stream they are eligible for group Y.
They worked in all other stream other than technical like logistics, account etc.