(Middletown, Oh) Middletown Police report they got a 911 call just after 1 p.m. Sunday from Middletown Hook Field, also known as the Middletown Regional Airport. Start Skydiving reported an employee was struck by an airplane propeller at the Butler County airfield. A woman employee accidentally walked into a working propeller suffering serious head injuries. The pilot of the plane had been yelling warnings at the woman to stay away  from the plane right before the accident happened.  The victim was treated by the Middletown Fire Department. Miami Valley Care Flight responded and the victim was transported to Miami Valley Hospital. The FAA was notified and the Middletown Division of  Police assisted them with their investigation. Name of the victim will be released after notification to family members.