Data on a moody recorder of a Russian fight craft downed by Turkey final month has so distant valid to be unreadable, Russia’s troops has said.
It pronounced a memory chips from a Su-24 bomber downed on a Syrian limit were broken or badly damaged.
The Russians had hoped to infer a craft never entered Turkish airspace, as claimed by Ankara. Work will continue to try to collect a data.
The occurrence sparked a vital shared crisis, with Russia commanding sanctions.
The Russian troops member presented their rough commentary in Moscow on Monday, after opening a “black box” on Friday in a participation of general experts.
Some 13 of a 16 chips had been destroyed, while cat-scan tests on a others showed extracting information would be unfit regulating normal methods.
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However, a BBC’s Sarah Rainsford in Moscow says serve work will be finished to see if other methods of retrieving a information are possible.
The Su-24 was shot down by F-16 fighters on 24 November.
Turkey insists that a jet, from a Russian atmosphere fortuitous deployed in Syria in support of President Bashar al-Assad, abandoned warnings to leave a airspace.
Both organisation members ejected though a commander was killed, apparently by militants on a belligerent while a navigator was rescued.
A Russian sea sent to rescue a organisation was also killed and a helicopter broken on a ground.
Russia says a craft was shot down within Syrian airspace. President Vladimir Putin has described Turkey’s movement as a “stab in a back” committed by “accomplices of terrorists”.
Russia has demanded an reparation from Turkey and in a meantime has imposed sanctions including a anathema on package holidays, that could cost Turkey billions of dollars.