MOSCOW, April 23 (Xinhua Net) On April 23th, Russian Interstate Aviation Committee of the Technical Committee announced their investigation of President Lech Kaczynski of Poland in Smolensk plane crash site and the "North" military airport came to an end. Investigation experts of air accident from Russia and Poland returned to Moscow to continue investigation of the crash.
According to Russian media reported, Investigation experts of air accident from Russia and Poland have made an agreement upon the analysis of the installation of the terrain tips and the warning system (TAWS) on the crashed plane and the global satellite navigation system (GNSS) manufactured by U.S. . The news report quoted the committee’s saying, "According to the interpretation of accident data recorder, TAWS system remains the open state in the aircraft during the whole flight."
Investigation experts of air accident have completed the identification of the sound discernment of the aircrews when the crash occurred and made the technical appraisal at the location of the aircraft cockpit as well. Through the translation by senior and knowledgeable translators, these experts would continue the simultaneous analysis of the "black box" which recorded the crew conversations and flight records of parameters.
At present, based on the preservation of aircraft wreckage and components of the research findings, Investigation experts of air accident from Russia and Poland are doing analysis of the aircraft flight dynamics and working status of each system. And the judging work of aircraft repairing records is going on.
On 22th, Inter-State Aviation Committee official release the news that according to local meteorological data, aerial photography, Geographical Survey measured materials and other materials, experts from both countries began to calculate and restore the flight path of the aircraft in the airspace of crash. The Working Group has now completed the first step of schematic crash drawing.
Moreover, the Accident Investigation Board Sub-Committee and the Working Group have got down to initiating the preparation of reports and evidence.