On Monaday, “Vistara” a Tata Sons full-service carrier joint venture with Singapore Airlines received its air operator permit (AOP) or flying licence from the Directorate General of Civil Aviation (DGCA) after completing the mandatory test flights and other regulatory obligations, paving the way for the passenger carrier to begin commercial operation. The airline said that it will soon make announcements on the start of sales, routes and schedules. The trial flights are conducted under the supervision of the DGCA officials. The airline currently has two Airbus 320s on lease and plans on having another five by March next year. The JV airline has Tata Sons holding a majority stake of 51 percent with Singapore Airlines having the remaining 49 percent.