Air China's Southwest Branch, which has the nation's largest plateau fleet, took delivery of six new Airbus aircraft in late May.

Composed of three A330-300s and three A319s, the six new aircraft, Registration B-5956, B-5957, B-5958, B-6468, B-6478 and B-6479, have been authorized by CAAC North China Regional Administration to serve high-altitude airports.

These airplanes were delivered after October 2014 and equipped well for operating in highland weather and conditions, like high-performance engines and improved technique performances of cabin pressurization system, oxygen system and brake system. Besides, the A319, known as the "Plateau Prince", is equipped with fuel-saving Sharklets - lightweight composite wingtip devices.

Up to date, Air China Southwest operates 28 Airbus aircraft, including 21 A319s, four A330-200s and three A330-300s, with an average age of 8.4 years.