Before revision: Classification of failure conditions by severity of effect Catastrophic, Hazardous, Major, Minor, or No Safety Effect A Catastrophic Failure condition is one which would result in fatalities usually with the loss of the airplane.
After revision: Classification of failure conditions by severity of effect Catastrophic, Hazardous, Major, Minor, or No Safety Effect A Catastrophic Failure condition is one which would result in multiple fatalities," usually with the loss of the airplane.