ATK (available tonne kilometres)

Available Tonne Kilometres (ATK) is a measure of an airline's total capacity (both passenger and cargo). It is:

capacity in tonnes ×km flown

This is a similar measure to ASK. It provides a combined measure, but is more suited to being a measure of freight capacity.

ATK should be calculated per plane, and these numbers summed to get an ATK number for the airline.

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