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soft turf. The helicopter rolled 90 degrees onto its left side and both main rotor blades impacted terrain. The helicopter sustained substantial damage to the main rotor system, transmission, tail rotor, tail boom and fuselage. The CFI reported that he had been too slow in taking remedial action. A post-accident examination of the airframe and engine revealed no evidence of mechanical malfunctions or failures that would have precluded normal operation. The characteristics displayed by the helicopter were indicative of it encountering a dynamic rollover.


The National Transportation Safety Board determines the probable cause(s) of this accident as follows:


     (CFI) did not maintain directional control during a downwind emergency running landing to soft muddy terrain, which resulted in a dynamic rollover. Contributing to the accident was  remedial action when the pilot receiving instruction did not control the rotor RPM during 


Preliminary Injuries: 1 Fatal


On June 20, 2015, at 0715       47G 5 helicopter, N4427F, was substantially damaged when it impacted a fence and terrain while maneuvering about 5 miles southwest of the Salinas Municipal Airport, Salinas, California. The helicopter was registered to, and operated by, an agricultural operator under provisions of Title 14 Code of Federal Regulations Part 137. The commercial pilot, the sole occupant of the helicopter, was fatally injured. Instrument meteorological                 loading area near the accident site about 0650.


Ground crewmen who worked for the  tank on the helicopter prior to its last departure. When the helicopter did not return for its scheduled rinse load, the crewmen drove out to the       that the helicopter had crashed on       crewmen witnessed the crash but stated that the fog was thick and visibility was between 10 and 20 feet at the time of the accident.


A post-accident examination of the helicopter was conducted by the Federal Aviation Administration on June 20, 2015. The examination revealed no evidence of mechanical malfunctions or failures that would have precluded normal operation.


Preliminary Injuries: 1 Uninjured


On June 21, 2015, about 1600 central daylight time, a Robinson R44 II helicopter, N305CG, landed hard and rolled on its side following a loss of engine power near Danville, Arkansas. The commercial pilot was not injured. The helicopter sustained substantial damage. The helicopter was registered to a private company and operated by a private individual under the provisions of 14 Code of Federal Regulations Part 91 as a       


According to information obtained by the Federal Aviation Administration,  when the helicopter experienced a partial loss of power. The pilot performed a forced landing to a rice  helicopter rolled on its side.


  








  





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  


  


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 





   


 48 August 2015


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