Ми-8 RA-24410 06.05.2013

      The accident with Mi-8 RA-24410 helicopter operated by "ANGARA" AIrlines of East Siberian International Territorial Department of FAA occurred near Preobrazhenka village, Irkutsk region (RF) on May 6, 2013 at 11:30 Moscow time. 
      During operation the rotorcraft didn't establish communication at specified time. The helicopter fragments scattered across the territory were detected during rescue works.
     

      Flight recorders and GPS receiver of Mi-8T RA-24410 helicopter involved in the fatal accident in the Irkutsk region (RF) on May 6, 2013 were delivered to the Interstate Aviation Committee on May 13, 2013.
      Delivered devices sustained heavy mechanical and thermal damage.
      The Interstate Aviation Committee experts proceeded to data recovery and readout.

     The Interstate Aviation Committee experts jointly with designers of SDK-8 flight recorder owned by "Techpribor" JSC (Sait-Petersburg, RF) carried out the activities on Mi-8T RA-24410 helicopter FDR data recovery and readout.
     All registered flight recorder data was copied and transferred to the Investigation team for further analysis.
     It wasn't possible to read out GPS receiver data due to heavy thermal and mechanical influence on the recorder (memory card).
      Activities on CVR data recovery are in progress.

      The Investigation team of the Interstate Aviation Committee has completed the investigation of the accident with Mi-8Т RA-24410 helicopter owned by "Angara" Airlines" JSC occurred in the Irkutsk Region (RF) on 6 May 2013. 
      The accident with Mi-8Т RA-24410 helicopter occured during aviation works (blasting operations) on elimination of ice-jams at water lines in emergency situation conditions was caused by the lack of clear regulations regarding the procedure of preparation and implementation of such activities as well as promotion of safety during transportation and usage of dangerous goods that resulted in helicopter airburst. 
      Most probably the helicopter airburst was caused by "donor charge" (ready-use charge with beaded capsule-detonator) mishandling by somebody in passenger-cargo helicopter cabine. Apart from the blasting crew three service passengers two of whom didn't have any pactice, skills and authorization to handle the explosives were in passenger-cargo cabin.
      The appropriate safety recommendations based on the investigation results were developed.