楼主担心的太多了，跑这个航线的是新飞机，不是十年的。
下面是2015年新闻：
Air China has begun using Boeing 747-8 Intercontinental jets for one of its
two daily round-trips between Beijing and New York JFK.
The airline’s new Boeing 747-8 Intercontinental fleet made its debut on the
Beijing-New York route on January 7, when flight CA981 landed at New York
JFK in the early afternoon.
Boeing 747-8Is will continue to operate Air China’s flights CA981 and CA982
on a daily basis. The airline’s other daily round-trip to and from New
York JFK, CA989 and CA990, will continue to be operated by Boeing 777-300ER
equipment.
Air China was the first Asian carrier to receive a Boeing 747-8I passenger
jet. To date Air China has ordered seven 747-8Is and has received four of
them.
新闻链接 http://www.airlinesanddestinations.com/airports/new-york-jfk-becomes-air-chinas-first-north-american-boeing-747-8i-destination/
