Disruption Impacts; Solutions and Constraints Disruption Impacts Solutions Constraints Flight delays Hold flights Aircraft balance Broken crew pairings Cancel flights Market protection Resource shortage ggregate flights Fleet/crew Crew unavailability · Divert aircraft compatibilit Disrupted maintenance Swap resources Resource positioning Gate problems Baggage handling Use spare aircraft|. Maintenance problems · Use reserve crews requirements others · Deadhead crews · Crew legalities Layover crews · Union contracts · Others
Disruption Impacts; Solutions and Constraints • Flight delays • Broken crew pairings • Resource shortage • Crew unavailability • Disrupted maintenance • Gate problems • Baggage handling problems • others • Hold flights • Cancel flights • Aggregate flights • Divert aircraft • Swap resources • Use spare aircraft • Use reserve crews • Deadhead crews • Layover crews • Aircraft balance • Market protection • Fleet/crew compatibility • Resource positioning • Maintenance requirements • Crew legalities • Union contracts • Others Disruption Impacts Solutions Constraints
Aircraft route swaps Schedule No Swapping Swapping Al: Fl Delay Fl A2;F2 A2;F1 Delay f2 43:F3 A3;F3 3;F2 Delay f3 Al: F1 Al; F3 time time Swapping useful to spread the delays informally, converge toward bank integrity t postpone the shortage problem t Recover from irregularities Constraints: Crew compatibility and legalities
Aircraft route swaps Swapping useful to: + Spread the delays informally, converge toward bank integrity + Postpone the shortage problem + Recover from irregularities Constraints: Crew compatibility and legalities A1;F1 A2;F2 A3;F3 A1;F3 A2;F1 A3;F2 Schedule Swapping time time Delay F1 Delay F2 Delay F3 No Swapping A3;F3 A1;F1 A2;F2