about one and a half minutes before the helicopter crash, the pilot of the saneh dehad helicopter communicated with the other two helicopters of the flight group. three. bullet marks or similar cases have not been observed in the remaining parts of the helicopter. four the saneh dehe helicopter caught fire after hitting the height. 5. due to the complexity of the area, fog and temperature. the reconnaissance operation was extended into the night and continued throughout the night, and on monday morning at 5 am, with the help of iranian unmanned aerial vehicles, the exact location of the incident was determined and the ground forces of the reconnaissance operation were present at that point. 6 no suspicious cases were observed in the conversations of the watch tower with the flight crew. in the end , it is noted that a significant part of the documents related to the helicopter industry , more time is needed to examine some parts and documents, which will be notified to the noble and revolutionary nation of iran in the next announcements after thoroughness and expert work. therefore , it is req