CCTV9英语新闻12月：美国航班计划应向中方通报（在线收听）

In response to US government advice, two of the biggest US airlines, American and Delta, have notified Chinese authorities of flight plans when travelling through the East China Sea Air Defense Identification Zone.

A spokesman for Delta Airlines said on Saturday it has been complying with the Chinese requests for flight plans for the past week. American Airlines said it was also complying, but declined to say for how long it had done so.