A Shenzhen Airlines Boeing 737-800 aircraft experienced problems in its auxiliary power unit (APU) on 25 August, resulting in the emergency evacuation of all passengers and crew on board.
The aircraft was taxiing at Shenzhen Bao'an International airport when the incident happened on board flight ZH9969, bound for Beijing. An airline spokesman says the aircraft's APU appeared to have been faulty during taxiing, triggering a fire alert.
He would not say whether there was a fire on board, but confirmed that smoke emitted from the tail of the aircraft.
The crew then followed procedures and evacuated all 87 passengers on board using emergency slides. Twelve passengers were injured in the process.
"Further checks and inspections will be done on the aircraft to assess what damage has been caused," says the spokesman.
The cause of the incident is under investigation. The airline could not provide the registration number of the aircraft.
Shenzhen Airlines has a fleet of 127 narrowbody aircraft, including 737s and A320s.