SEAT-KILOMETER in English ASM or Available SEAT Miles, AKO in Spanish, ability of an airline to transport passengers in order to assess the origin of its income. AKO=NUMBER OF SEATS IN EACH AIRCRAFTXKMS OF FLIGHT . Then, it can be extrapolated and globalized to the entire company. And by global figures, we do not mean only an airline, but also a group of airlines (the IAG group, for example) those of a commercial alliance (Oneworld, for example), those that belong to the same country, or those that operate in the same airport.