Summary Lecture #2 Achieving good passenger service reliability at an acceptable operating costs Disrupted passengers suffer long delays on average( 320 minutes)versus non disrupted passengers(14 minutes) Connecting itineraries have a much higher risk of being disrupted than local itineraries(2.7x) Late disruptions are often difficult to recover the same day, much higher flight delay and cancellations at the end of the day Delays accumulate along the day resulting in relatively high percentage of overnight passengers among disrupted(20%), but still small percentage (0.7 of passengers)Summary Lecture #2 • Achieving good passenger service reliability at an acceptable operating costs • Disrupted passengers suffer long delays on average (320 minutes) versus non disrupted passengers (14 minutes) • Connecting itineraries have a much higher risk of being disrupted than local itineraries (2.7x) • Late disruptions are often difficult to recover the same day, much higher flight delay and cancellations at the end of the day • Delays accumulate along the day, resulting in relatively high percentage of overnight passengers among disrupted (20%), but still small percentage (0.7% of passengers)