Airline Operations Lecture #1 1206J Apri23,2003
Airline Operations Lecture #1 1.206J April 23, 2003
Outline Airline planning complexity Schedule disruptions Schedule dependability CDM Ground delay Program How do airlines recover the schedule? Traditional ARM; Model shortcomings Interdependency of passengers and aircraft operations
Outline • Airline planning complexity • Schedule disruptions • Schedule dependability • CDM Ground Delay Program • How do airlines recover the schedule? • Traditional ARM; Model shortcomings • Interdependency of passengers and aircraft operations
Airline planning Optimized schedule designs have resulted in squeezed schedule with little slacks(i. e, idle time For examples: r FAM with Tw: less aircraft slacks Extended Crew Pairing problem: less crew slacks Plan is more inclined to be disrupted Ongoing research in robust planning: are airlines ready to pay the cost?
Airline planning • Optimized schedule designs have resulted in squeezed schedule with little slacks (i.e., idle time) • For examples: ¾ FAM with TW: less aircraft slacks ¾ Extended Crew Pairing Problem: less crew slacks • Plan is more inclined to be disrupted • Ongoing research in robust planning: are airlines ready to pay the cost?
Feasibility constraints Aircraft maintenance checks Pilot work rules · Flights assengers
Feasibility constraints • Aircraft maintenance checks • Pilot work rules • Flights • Passengers
Aircraft maintenance checks A: roughly once a week-on average approximately every 60 flight hours B: once a month --roughly every 300 to 500 flight hours C: Entire aircraft check Narrow body once a year “ ight C Check”(③3days) “ Heavy c check”(3to5weks) Wide bodies: every 15 to 18 months Heavy c checks" (2 weeks)
Aircraft maintenance checks • A: roughly once a week -- on average approximately every 60 flight hours • B: once a month -- roughly every 300 to 500 flight hours • C: Entire aircraft check ¾ Narrow body: once a year; • “Light C Check” (3 days) • “Heavy C Check” (3 to 5 weeks) ¾ Wide bodies: every 15 to 18 months; • “Heavy C Checks” (2 weeks)