AirAsia QZ8501: Pings detected from black box

INDONESIAN authorities have revealed they have detected pings that could be coming from the AirAsia flight that crashed into the Java Sea more than a week ago.

The authorities said on Friday they believe the pings to be coming from the plane's black box and flight recorders.

Indonesian National Transportation Safety Committee investigator Santoso Sayogo told Reuters on Friday that it appeared the black box was no longer in the tail.

"We received an update from the field that the pinger locator already detected pings," Mr Sayogo said.

"We have our fingers crossed it is the black box, but divers need to confirm.

"Unfortunately it seems it is off from the tail (which was located earlier this week) but the divers need to confirm the position."

AirAsia flight QZ8501 crashed into waters off Borneo on December 28 about 40 minutes into a two-hour flight from Surabaya to Singapore, killing the 162 passengers and crew onboard.

Bad weather and challenging conditions have hampered the recovery efforts in the days following the crash and only 40 bodies have been recovered so far.