A Tway Airlines Boeing 737-800, registration HL8069 performing flight TW-667 from Seoul Gimpo (South Korea) to Taipei Songshan (Taiwan), was descending towards Taipei when a passenger's power bank began smoking. Cabin crew responded, a fire extinguisher was discharged and the passenger's bag and device were secured. The aircraft continued for a safe landing at Songshan Airport.

The airline confirmed the occurrence reporting the power bank overheated and began to emit smoke, however, did not catch fire. The aircraft did not receive any damage.

The aircraft performed the return flight after 3 hours on the ground and reachd Gimpo Airport with a delay of 100 minutes.