***Definition*** :: The probability of encountering risk categorized as probable, occasional, remote, or improbable. ***Source*** :: [[Risk Management Handbook]] ***Additional Info***: - Probable: An event may occur several times. - Occasional: An event may occur sometime. - Remote: An event is unlikely to occur but is possible. - Improbable: An event is highly unlikely to occur. > [!example] From [[Risk Management Handbook]] Consider the likelihood of exceeding airframe structural limits if penetrating a thunderstorm. It is likely that the airframe’s structural limits would be exceeded each time this occurs, making the likelihood "probable." > [!example] From [[Risk Management Handbook]] Consider a case where a pilot operates at an airport surrounded by rough terrain. The runways are just long enough to accommodate the aircraft. The possibility exists for a runway overrun on each landing. Given this data, an overrun could occur sometime, and the likelihood is "occasional." #glossary