False alarm occurred in smoke detection of Air China flight CA1291, and the plane slipped back to check.

CTOnews.com news on November 3, Air China (Air China for short) issued an announcement yesterday night:

On November 2, Air China flight CA1291 (Beijing Capital-Urumqi) was launched during the taxiing phase, the rear cargo cabin smoke detection alarm, the crew immediately disposed of in accordance with the procedure, the plane glided back to check, and immediately organized passengers to get off the plane.

After on-the-spot investigation, it was judged to be a false alarm. In order to send passengers to their destination as soon as possible, Air China has arranged for another plane to continue its flight, and the flight took off at 19:51. We apologize for the inconvenience and thank the visitors for their concern and support.

CTOnews.com checked with the brigade and found that the flight was scheduled to take off at 15:00 on November 2, but its arrival was delayed by 4 hours and 27 minutes. the aircraft showed the 6.4-year-old Boeing 737, but it was not clear whether it was a replacement.