Investigator: Co-pilot flew AirAsia jet

The plane was in good condition and the crew were all certified, said Mardjono Siswosuwarno, the chief investigator for Indonesia’s National Transportation Safety Committee.

The AirAsia flight went down on December 28 as it flew from the Indonesian city of Surabaya toward Singapore.

CNN’s Kathy Quiano reported from Jakarta, and Madison Park wrote from Hong Kong.

CNN