China plans to categorize its airspace according to international standards within three years, opening up the skies for private airplanes, state media reported. The General Administration of Civil Aviation (CAAC) said the move would cut down on complex legal requirments for private aircraft. The move may boost sales of private aircraft as China's skies, which are currently under military control, are becoming more open and low-altitude flights are allowed. In Zhejiang Province, for example, getting a plane airborne today is more difficult than paying for it. "Adopting airspace categories can ensure that the different demands of public transportation aviation, general aviation, and military aviation can all be met," said a CAAC official.