Indonesia search and rescue teams searching for the wreck of an AirAsia passenger plane have detected pings in their efforts to find the black box recorders.
The Airbus A-320 vanished from radar screens on 28 December.
It was less than half way into a two-hour flight from Indonesia's second-biggest city of Surabaya to Singapore.
There were no survivors among the 162 people on board.
Search teams are to mount an operation today to raise the tail section from the Java Sea.
This raises hopes that the black boxes can be found to reveal the cause of the crash.
The Airbus A320 carries the black box cockpit voice and flight data recorders near the tail section.
Officials have warned, however, that they could have become separated from the tail.
The tail section was found last Wednesday, upturned on the sea bed about 30km from the plane's last known location at a depth of around 30 metres.
