If you built a model to schedule a network of trains, could you re-use that model to calculate the depreciation of those trains?

如果你建立一个模型来指定列车时刻表，你会使用当初用来计算火车折旧的模型吗？

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That means that lengthening the depreciation schedule marginally raises the tax bill of a company that acquired an aircraft for their business use.

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Then, it calculates depreciation and spits out a "Depreciation and Amortization" Form 4562 to attach to the Schedule E of your tax return.

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