| http://www.w3.org/ns/prov#value | - unit cost; represents all operating expenses including fuel and special items CASMex - operating costs excluding fuel and special items per ASM; this metric is used to help track progress toward reduction of non-fuel operating costs since fuel is largely out of our control Economic fuel - best estimate of the cash cost of fuel, net of the impact of our fuel-hedging program Aircraft Utilization
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