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Pages 50-52

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From page 50...
... 50 C H A P T E R 9 Data that support the estimation of the overall national economic impact of airports, multifactor productivity, and consumer surplus will tend to become obsolete over time, to varying degrees, because of changes in the economy, changes in technology, and new research findings. While the overall framework may remain applicable, future research will be necessary to both update and enhance the factors shown in this report.
From page 51...
... 51 danger of double counting between the economic benefits of air cargo and air travel is that business travel often leads to merchandise sales. Therefore, care is necessary to avoid double counting the impacts of business travel and cargo exports.
From page 52...
... 52 from more air passenger surveys. A rich data set that might be explored is the Airport Service Quality Survey conducted at more than 40 airports each quarter by ACI-NA.

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