9 January 2015
Last updated at 04:06
An attempt to pull the tail out of the Java Sea was unsuccessful on Thursday because of strong currents
“Pings” have been detected in the Java Sea which could have come from the “black box” of AirAsia flight QZ8501, officials say.
The commander of the Indonesian armed forces, Gen Moeldoko, told the BBC divers had been sent to investigate.
There are concerns that this means the flight recorders are not in the tail of the plane, found earlier, as previously thought, he added.
QZ8501 disappeared from radar on 28 December with 162 people on board.
No survivors have been found from the plane, which was flying from Surabaya in Indonesia to Singapore.
“A ship detected the pings. The divers are trying to reach it,” said S.B Supriyadi, in Pangkalan Bun, the base for search operations.
“The location of the ping is reported to be near where the tail was found.”
The BBC’s Alice Budisatrijo, who is on board an Indonesian warship with Gen Moeldoko, says a crane has been deployed to pull the tail out of the water. An attempt yesterday was hampered by strong currents and low visibility.
The rear part of the plane was spotted on Wednesday by an unmanned underwater vehicle and is usually where the flight data recorders are housed.
Authorities said it was upside down and partially buried. Gen Moeldoko said on Friday it appeared to be in broken condition.