An Air China flight was compelled to execute an emergency landing on Saturday, October 18, after a lithium battery stored in a passenger’s carry-on luggage ignited mid-flight. The incident occurred aboard flight CA139, which had departed from Hangzhou Xiaoshan International Airport at 9:47 AM local time, en route to Incheon International Airport. The battery, stored in the overhead compartment, spontaneously caught fire, prompting the aircraft to divert to Shanghai Pudong International Airport. Air China confirmed the event in a statement, emphasizing that the cabin crew responded promptly, and no injuries were reported. Videos of the incident quickly circulated on social media, sparking widespread concern. This incident follows a recent decision by Emirates to restrict the use of power banks during flights, allowing only devices under 100 watt-hours (Wh) to be carried, but not used or charged inflight. The aviation industry has seen a surge in lithium battery-related incidents, raising safety concerns globally.