I have noticed for quite some time that flights departing out of Shanghai, Pudong (ZSPD) headed for Sydney, Australia (YSSY) track out to Okinawa Japan then turn south to Australia. They used to track along the coast to just north of hong kong along the eastern coast of china then head out over the Philippines then down on into Australia. Does anyone know why they are headed out over Okinawa? I noticed that flights ZSPD-YMML still hug the china coast,
Just curious as to why they would fly this route.