Investigators are still trying to understand the accident sequence which destroyed a Bombardier CRJ200 during an attempted go-around at Almaty.
The regional jet, operated by Kazakhstani carrier SCAT, came down on 29 January last year after a flight from Kokshetau, with no survivors among the 21 passengers and crew.
Kazakhstan’s ministry of transport says the aircraft had sufficient fuel for the flight, as well as diversion to an alternate.
In an interim update to the inquiry, it adds that there is no evidence of technical failures, icing or other “external influence” before the CRJ crashed east of the airport.
But it states that the investigation involves a “high level of complexity” as it seeks to clarify the reasons why the crew failed to execute the missed approach successfully.
The inquiry has been trying to establish the location of each crew member and their actions in the final stages of the flight, an effort which has required “comprehensive” examination, it adds.
Russia’s Interstate Aviation Committee, which is assisting, says the probe has been analysing similar accidents and looking into psychological aspects.
“Every detail matters,” says chairman Alexei Morozov. “We can only reach conclusions by gathering sufficient evidence.”
He says investigators in Kazakhstan and Russia are consolidating their evaluation of audio information into a single analysis. Draft findings will be shared with US and Canadian investigation authorities.