Hello,
Yes, you apply for Indian Airforce Group X and Y second cycle recruitment if you haven't applied for first cycle. The notification will be released twice in a year. The first cycle notification in December/January and second cycle notification in June/July. But you must fulfill the eligibility criteria. The upper age limit is 21 years as on the date of the enrollment. So if your age will be less than 21 years on the date of registering for Airforce Group X and Y recruitment you can apply.
Please check for the updates from time to time to know the important details. You can check the updates in the official website
https://airmenselection.cdac.in/CASB/
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