|
45 TRANSPORT BY AIR |
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451 Air Transportation, Scheduled |
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4512-01 Airline Companies |
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4512-02 Air Cargo Service |
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4512-98 Air Transportation-Scheduled |
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4513-01 Air Courier Services |
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4513-02 Expediters |
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4513-03 Parcels For Foreign Countries |
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452 Air Transportation, Nonscheduled |
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4522-01 Helicopter-Charter & Rental Service |
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4522-02 Air Ambulance Service |
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4522-98 Air Transportation-Nonscheduled |
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458 Airports, Flying Fields & Services |
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4581-01 Aircraft Ground Support & Service Equip |
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4581-02 Aircraft Engines-Servicing & Maintenanc |
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4581-03 Aircraft Ferrying & Transporting Svc |
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4581-04 Aircraft Servicing & Maintenance |
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4581-05 Aircraft Storage |
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4581-06 Airports |
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4581-07 Aircraft Upholsterers |
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4581-08 Helicopter-Servicing & Maintenance |
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4581-09 Air Traffic Control Tower |
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4581-10 Aircraft Refinishing & Painting |
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4581-11 Airline Support Services |
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4581-12 Aircraft Hangars-Rental & Sales |
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4581-13 Aircraft Washing & Polishing |
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4581-14 Aircraft Support Services |
