Delay chain Arrival delays, especially those that occur early in the day, tend to propagate in the network ■■■1 Flight B ■■■}■ A■■看■ 6:007:008:009:0010:0011:0012:0013:00 Local Arrival and Departure Times ■■■| Scheduled Attendants Actual Crew Aircraft
Delay chain Arrival delays, especially those that occur early in the day, tend to propagate in the network. Flight 6:00 7:00 8:00 9:00 10:00 11:00 12:00 A B C D Scheduled Actual Attendants Crew Aircraft Local Arrival and Departure Times 13:00
Banked hub airport In Us. no schedule restrictions at all but 4 airports(which ones? Major airlines use to schedule more flights than maximum airport hub airport capacity When adverse weather conditions happens, flight operations under iFR rules, greater Miles In Trail(MIt): minimum separation distance between two aircraft in terminal area When volume too high in a sector, flights are slowed down or delayed on the ground (Ground Delay Program)
Banked hub airport • In US, no schedule restrictions at all but 4 airports (which ones?) • Major airlines use to schedule more flights than maximum airport hub airport capacity • When adverse weather conditions happens, flight operations under IFR rules, greater Miles In Trail (MIT): minimum separation distance between two aircraft in terminal area • When volume too high in a sector, flights are slowed down or delayed on the ground (Ground Delay Program)
H VFR conditions oE 825 口 Total Departures 口Tota| Arrivals 20 IFR conditions 10 567891011121314151617181920212223
0 5 10 15 20 25 30 35 40 45 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Number of operations per 15minutes Total Departures Total Arrivals VFR conditions IFR conditions
Air Traffic Control System Command center Air route traffic control centers Terminal radar approach control- tRacon Air traffic control tower
• Air Traffic Control System Command Center • Air route traffic control centers • Terminal radar approach control - TRACON • Air traffic control tower