MAC: collision avoidance system to land the plane Kaczynski was not defective

Collision avoidance system with the ground (TAWS) and on-board computers installed in the Polish Tu-154 crashed April 10 near Smolensk, were undamaged.
Said on Tuesday, June 8, the Interstate Aviation Committee (IAC).
Specialists IAC completed the analysis of materials prior record company Universal Avionics Systems Corporation (UASC) on the study of information systems on-board collision avoidance with the ground (TAWS - Terrain Avoidance Warning System) and on-board computers (FMS UNS-1D), installed on an aircraft.
"The study, which was launched May 4, 2010 in the laboratory of Research Center UASC in Redmond (USA, Washington), it was found that the equipment in flight on April 10 has been properly and provides the crew and aircraft systems necessary information" - IAC said in a statement.
Besides the technical committee held an additional MAC expert assessment of the flight crew actions of the Polish aircraft during landing.
According to the report, the assessment was based on the analysis of record flight parameters derived from the decoding of the parametric airborne crash recorders, records of negotiations members of the crew in the cockpit and controllers, air traffic control services, materials, flight subcommittee.
Recall, the Interstate Aviation Committee completed transcripts of flight recorders of the Polish Tupolev Tu-154 on May 19. In the IAC expelled attack, explosion or fire as a cause of the crash.
June 1 transcript records the black boxes of the presidential aircraft have been published on the website of the Ministry of Internal Affairs and Administration of Poland. As reported, with records that the crew was told about the impossibility of landing in Smolensk, still 15 minutes before the crash. In addition, pilots not react signals of an early warning system for approaching the earth (the system TAWS).
On the eve of June 7, the Polish newspaper DziennikGazetaPrawna reportedThat the manager of the military airfield in Smolensk could provide the crew crashed Tu-154 invalid data on the trajectory of his fit.
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The Polish government plane TU-154 crashed near Smolensk on 10 April. On board was the President of Poland Lech Kaczynski. The Polish leader, along with the official delegation flew to Katyn to participate in memorial events. On board were 96 people: 88 passengers and eight crew members. As a result of the crash did not survive one.

Adapted from:

RIA Novosti