Читать книгу System Reliability Theory - Marvin Rausand - Страница 45

Airline passengers are mainly concerned about whether the journey will be safe and whether the aircraft will take off and land on the scheduled times. The second concern is, by airlines, expressed by the dispatch reliability, which is defined as the probability that a scheduled departure takes place within a specified time after the scheduled departure time. Many airlines use a 15‐minutes margin between actual and scheduled departure time for a flight to be considered as having departed on time. The achieved dispatch reliability indicator for a (past) period is reported as the percentage of all departures that departed on time.

For technical items, the airlines are mainly using the reliability metrics listed in Section 1.4.1