Can a 12th pass candidate apply for airport authority jobs in India?

I think chances are less. If you want airport-related job with 12th pass, better to try for CISF security staff posted at airports.

Airport Authority of India mostly recruits graduates, but for junior assistant and support staff, sometimes 12th pass qualification is accepted. You need to check AAI notifications carefully.

Yes, there are fireman, driver, security guard type jobs in AAI that need 12th pass only. But competition is high and physical standards are strict. Keep an eye on official recruitment site.

12th pass students can apply for some jobs in AAI, but not for officer posts. Best option is to target support level jobs and later grow with experience.