Registry · SIC Index

Major Group 45: Transportation by Air

Reference listings for legacy Standard Industrial Classification (SIC) codes under Division E: Transportation, Communications, Electric, Gas, and Sanitary Services. Select an industry category below to trace its modern NAICS equivalent.

SIC Codes in this Major Group (4)

4512 Air Transportation, Scheduled

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4513 Air Courier Services

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4522 Air Transportation, Nonscheduled

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4581 Airports, Flying Fields, and Airport Terminal Services

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