How long should I apply in advance for private helicopter takeoff in Hangzhou?

Seven days. According to the Regulations on the Administration of Civil Aviation Flight Activities, private jets in Hangzhou should apply to the Civil Aviation Administration seven days in advance, including flight plans, crew qualifications and other information. At the same time, it needs to be filed with the airport operation headquarters before taking off, and it can only take off after coordination. These applications and filing need to be prepared in advance and carried out before take-off. Private jet refers to a privately owned aircraft, which is used to facilitate personal use or business trips of individuals and their entourage, and also reflects the owner's identity.