The exact meaning of terms such as 'FREQUENT', 'REASONABLY PROBABLE', 'REMOTE', 'EXTREMELY REMOTE' and 'EXTREMELY IMPROBABLE' can be found in AC 29.1309.
This text also includes the definitions of failure condition classifications such as 'NO EFFECT', 'MINOR', 'MAJOR' and 'HAZARDOUS/SEVERE-MAJOR' - the last also including 'CATASTROPHIC'.
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