Indian airport systems were restored post a 17-hour MS Windows outage. With 273 cancellations, flights dropped from 3,000 to 2,700. According to aviation ministry data, around 3,000 domestic flights operated Thursday, but this number fell to 2,700 Friday – a decrease of over 300 flights, with IndiGo alone cancelling 273 flights (about 14% of its daily operations). The on-time performance of domestic flights was affected Friday due to slower manual processes.