TRANSPORTATION BY AIR (SIC MAJOR GROUP E45)

This major group includes establishments primarily engaged in 
furnishing domestic and foreign transportation by air and also those 
operating airports and flying fields and furnishing terminal services. 
Establishments primarily engaged in performing services which may 
incidentally use airplanes (e.g., crop dusting and aerial
photography) are classified according to the service performed.

Note:  In publication descriptions we use: "Air transportation".