A preliminary report on the downing of Malaysia Airlines flight MH17 will be published next week.
The Dutch Safety Board (DSB), which is leading the investigation into the disaster in which 10 Britons were among the 298 people killed, will issue the report next Tuesday.
The DSB said today: "The preliminary report will present factual information based on the sources available to the DSB.
"In the months to come further investigation is needed before the final report can be written."
The Dutch Safety Board expects to publish the final report within a year after the crash.
No-one has claimed responsibility for the shooting down of the Malaysia Airlines Boeing 777 over war-torn Ukraine on July 17, but it is suspected that the plane may have been hit by a missile fired by pro-Russian separatists.
The plane was en route from Amsterdam to Kuala Lumpur, with the majority of those on board being Dutch.
The DSB has not been able to visit the crash site because the safety of the investigators could not be guaranteed.
The black boxes from the flight were recovered and were taken the UK Air Accidents Investigation Branch's (AAIB) headquarters in Farnborough, Hampshire, for analysis.
The DSB said that both the boxes were damaged but that valid flight data had been successfully downloaded.