Türkiye's National Defense Ministry said flight data recorder and technical examinations found no malfunction in the crew's communications, aircraft systems, engines or propellers before a Turkish C-130 military cargo plane crashed near the Georgia-Azerbaijan border.
The ministry added that the incident developed suddenly and that available recorder data does not contain additional information to clarify the crash.
In a statement on the latest status of the investigation, the ministry said the flight data recorder was reviewed and showed that everything had been proceeding normally in the digital records up to the moment of the accident.
The ministry said there was no irregularity detected in the flight crew's conversations or in the aircraft's systems before the crash.
According to the ministry, the crash unfolded suddenly.
It said the recording ended because the aircraft's tail cone section separated from the fuselage, causing the power and data cables belonging to the flight data recorder to be severed.
As a result, the ministry said the recorder did not contain additional data that could further clarify the accident.
The statement said that until the moment the recording stopped, no disruption had been identified in either crew communications or aircraft systems.
The ministry also said detailed examinations of the aircraft's engines and propellers found that they had been operating without problems until the time of the crash.
It added that no evidence was found showing that damage to the fuselage had been caused by a propeller detachment.