Airport police handle temporary identification and work 24 hours a day. They apply for temporary identification for passengers. If their ID card expires, they can apply for a temporary flight permit. If passengers forget to bring or lose their ID cards, they can take expired ID cards, driver's licenses, household registration books and other relevant documents that can prove their identity to the police room of the terminal for temporary flight certificates.
The validity period of the temporary flight permit is usually 7 days, and it can be extended to 15 days in special circumstances, and the fee is charged according to the provisions of the price department. The temporary flight permit is also paper, and it is only valid when flying.