Air investigators are to examine a second black box which was recovered from flight MH17 today.
The data could reveal if the pilots were aware of a missile coming towards the plane and what happened in the last few seconds of the flight if they were able to speak.
A memorial service has been held in Sydney, Australia for the victims of the MH17 air disaster.
The number of Australians killed in the crash rose from 28 to at least 36 on Sunday as the names of eight people from overseas who had chosen to make Australia their home were added, Associated Press reported.
They are among the 298 people killed when the Malaysia Airlines flight was shot down over eastern Ukraine on Thursday.
Australian prime minister Tony Abbott, who said yesterday Russia "can't wash its hands of responsibility" for the disaster, attended the service at St Mary's Cathedral.
Thousands of online users have taken to social media to call for the victims of the Malaysian airliner crash to be returned to loved ones.
United States intelligence officials admitted that they do not know who fired the surface-to-air missile that downed flight MH17.
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