On Dec 26th 2020 Turkish Media report the final expert report has been submitted to Istanbul's Chief Prosecution Office (editorial note: the website of the Turkish Accident Investigation is still defunct, and by past experience it is not to be expected that a final investigation report will ever be published - we'd certainly prefer to see the original report rather than what media report about statements provided in a press conference). According to the States Attorney the report states that the accident was "predictable and preventable". The aircraft had received a lightning strike earlier into the flight causing stress to the captain, who wanted to get the aircraft onto the ground as quickly as possible. The approach to runway 06 became unstable with too high a speed in addition to strong tail wind, tower did not instruct a go around. After touch down the captain disabled automatic brakes and speed brakes when he believed the aircraft had slowed sufficiently, the aircraft did not experience deceleration for about 6 seconds as result before manual braking was applied causing the main wheels to hydroplane. The aircraft crossed the runway end at 57 knots and impacted the airport perimeter wall causing 3 fatalities and 180 injuries. The report also states that the copilot, with 400 hours total flight time, did not call out various deviations (e.g. speed, sinkrate, ...) during the final approach and did not call for a go around. Part of the blame also goes to the tower, who believed the landing was risky but cleared the flight to land and did not instruct a go around. The lack of a runway end safety area contributed to the accident and in particular to the severity of the accident.
