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Improbable Failure Conditions

Improbable Failure Conditions are those failure conditions unlikely to occur in each airplane during its total life, but that may occur several times when considering the total operational life of a number of airplanes of this type. Also, those failure conditions not anticipated to occur to each airplane during its total life but that may occur a few times when considering the total operational life of all airplanes of this type. For quantitative assessments, refer to the probability values shown for major and hazardous failure conditions in figure 2. For more specific guidance,

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