On Sep 13th 2019 The Aviation Herald learned that an internal investigation conducted by Smartwings identified there was no systemic fault, but a crew error. The captain of the flight, at that time head of flight operations of Smartwings, is no longer head of flight operations, his deputy has now taken that position. The captain continues to fly for the airline and maintains privileges as instructor, examiner and TRE. Czechia's CAA is determined to ensure that such a decision is not taken again in the future and pledges very harsh penalties. Surrounding nations also show significant interest in the ongoing investigation, revocations of overflight permits are being discussed.
Smartwings B738 over Aegean Sea on Aug 22nd 2019