国航一航班客舱氧气面罩系统故障，已安全返回首都机场

Core Points - On August 28, a CA965 flight from Beijing to Frankfurt experienced a malfunction in the cabin oxygen mask system, prompting the airline to return to Beijing for safety reasons [1] - The aircraft landed safely at Beijing Capital International Airport at 11:30 AM, and the airline has arranged for another aircraft to handle subsequent flight operations [1] - The airline expressed gratitude to passengers for their understanding and support during the incident [2]