Aadhaar card or passport may soon become mandatory to fly within India | Latest News & Updates at Daily News & Analysis
So they are using the no-fly-list as an excuse to make these mandatory. Basically admitting that Voter ID or Pan Card are not reliable proofs.
According to the report, the aviation ministry is in the process of putting four levels of offences - ranked in terms of seriousness - to create the proposed no-fly list. The government will decide the restrictions for passengers engaging in unruly behaviour with airline staff or passengers, according to the seriousness of the offence.
So they are using the no-fly-list as an excuse to make these mandatory. Basically admitting that Voter ID or Pan Card are not reliable proofs.