The Y-20 is the largest aircraft ever built in China. Notably. If Boeing stops making the C-17 Globemaster III (another Zhuhai guest) as planned in 2015, the Y-20 will become the largest military airlifter in production. Currently, Xian Aircraft Corporation has flown at least two flying prototypes, "781" and "783" have been built ("782" is a factory static testbed). The Y-20, despite being slightly shorter than the Russian Il-76, can carry a greater payload of 66 tons at a maximum takeoff weight (MTOW) of 220 tons, once domestic WS-20turbofan engines replace the current Russian D-30 turbofans. The Y-20will give the Chinese military to quickly deploy infantry, tanks, anti-air and anti-ship missiles throughout Asia, as well as humanitarian aid. The Y-20 could also be modified into an airframe for other strategic missions such as an Airborne Early Warning and Control (AEW&C), an anti-satellite laser carrier, and aerial tanker.