Along with the stable growth in world trade and production
and important changes, which have flourished in national, trading based on expansion of non-oil exports. It is necessary to know the economic structure of transportation as the infrastructure of trading. The present study is an attempt to
empirically investigate the production structure of Iran airline
system, and to provide measure's productivity growth and
technical change and Identify theirs sources. To achieve this
purpose, the Translog multiproduct cost models have been used
and Translog model was estimated using time-series data covering the period 1355-1378. Zellner's sequential Iterative
Seemingly Unrelated Regression method was used in estimating the Translog model
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