International investigators are expected to confirm in a final report that a Russian-made BUK surface-to-air missile brought down a Malaysia Airlines plane in eastern Ukraine.
Thirty-eight Australian citizens and residents were among the 298 killed when MH17 was blown out of the sky on July 17 last year on a flight from Amsterdam to Kuala Lumpur.
The Boeing 777 was flying above heavy fighting between Ukrainian government forces and pro-Russian separatists.
At an air base in the southern Netherlands on Tuesday, the Dutch Safety Board will release its final report into the cause of the crash in front of many relatives of the victims.
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The board will also unveil part of the plane's cockpit and business class section reconstructed from the wreckage.
The report will also address the issue of airlines flying over conflict areas and to what extent people on the plane were aware of what was happening when it was hit.
The safety board, which is the Dutch transport watchdog, has made clear it is not concerned with blame or liability as those are matters for the criminal investigation to answer.
The Joint Investigation Team has been probing the crash for 15 months and has representatives from the Netherlands, Ukraine, Australia, Malaysia and Belgium - the countries most affected by the crash.
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Dutch prosecutors confirmed in August that investigators had examined seven "considerable fragments of some size ... probably from a BUK (surface-to-air) missile system" recovered from the crash site.
Kiev and the West have accused pro-Russian rebels of shooting down the plane, possibly with a BUK missile supplied by Russia.
Moscow and the rebels deny any responsibility and point the finger at Ukraine's military.
Both the Russian and Ukrainian militaries have BUK missiles in their arsenals.
In July Russia vetoed a bid at the United Nations Security Council to set up an international tribunal to try those behind the downing of the aircraft.
Countries involved in that bid, including Australia, are looking at other ways to bring the perpetrators to justice.
But last month Foreign Minister Julie Bishop said she would not rule out another UN Security Council resolution next year after the final police investigation report was released.
