The Airbus A320-200 vanished from radar screens on December 28, less than halfway into a two-hour flight from Indonesia's second-biggest city of Surabaya to Singapore. There were no survivors.
Investigators are analysing data from the aircraft's two "black box" flight recorders to determine exactly why it crashed.

Also Read: Analysing black box of AirAsia jet to be tough: Investigator

Transport Minister Ignasius Jonan on Tuesday told a parliamentary hearing that, according to radar data, the plane had climbed faster than normal in its final minutes, after which it stalled.

Investigators have not found any evidence so far that terrorism played a part in the disaster.

Read More: No evidence so far of terrorism in AirAsia crash: Investigators

Investigators are expected to submit a preliminary report to the International Civil Aviation Organization (ICAO) early next week. Under ICAO regulations, the preliminary report must be filed within 30 days of the date of the accident.
"One month after the accident we will just make a preliminary report. No comment and no analysis," Tatang Kurniadi, chairman of the National Transportation Safety Committee, told reporters.

"This will not be exposed to the public. This is for the consumption of those countries that are involved," Kurniadi said.

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