The document discusses the Indian aviation industry, major private airlines operating in India such as SpiceJet, IndiGo, and Kingfisher Airlines. It notes that the Indian aviation industry is one of the fastest growing worldwide, starting in 1912 with domestic routes. By 2000, many private companies had entered the industry, dominating 75% of the market. It then provides details about SpiceJet, IndiGo, and the former Kingfisher Airlines. IndiGo is preparing for an IPO of up to $400 million to further expand its market share and operations.