Search efforts have detected crashed Flight QZ 8501’s second and final black box containing the cockpit voice recorder, said Mardjono Siswosumarno, Indonesian chief of the National Transport Safety Committee (NTSC), on January 12.

The device, which recorded the radio transmissions and sounds in the cockpit of the AirAsia plane that crashed into the Java Sea with 162 people on board, was located as a result of strong ping signals. This second black box will soon be retrieved for further investigation.

Also on January 12, divers successfully brought the first black box to the surface, containing the flight data recorder and holding vital information on what caused the serious accident.

According to the NTSC, it will take up to a month to produce a preliminary report based on the data.

AirAsia Flight QZ8501 lost contact with air traffic control on the morning of December 28, only 42 minutes after taking off from Indonesia’s Surabaya airport for Singapore.

It carried 162 passengers and crewmembers, including 155 Indonesians, three Koreans, one Singaporean, one Malaysian, one French, and one British.

To date, 48 bodies of the victims have been found, 27 of which have been identified.-VNA