The NTSB has released its report
here.
Report attachments / dockets Crash
Video Joe Munoz Maverick
Letter
The National Transportation Safety Board determines the probable cause(s) of this accident to be: The pilot’s failure to apply anti-torque pedal input in a sufficient, timely, and sustained manner while attempting to arrest a turn during a hover-taxi, which resulted in a loss of directional control. Contributing to the severity of the occupants’ injuries was the inconsistent performance of the seats’ energy-absorption devices, which was likely due to the rotational forces encountered during the accident which were not required to be accounted for during the
seat certification process.
Some interesting facts were published in the report. Prior to the accident and employment at Papillion Helicopters, pilot Marius Calderwood had already completed approximately 7.6 hours of Type Rating Training at Maverick Helicopters, then his training was terminated. The pilot then went to complete additional type training and employment at Papillion with out disclosing his previous experience at Maverick ??