37
Aircraft fueling services; airplane de-icing services; outer and inner cleaning of aircraft
39
Airline check-in services; airport baggage check-in services not including security inspection; airline baggage claim services; airport passenger check-in services; airline services, namely, passenger ticketing, gate processing; passenger and baggage handling services for air charters; cargo handling; cargo unloading; airport ramp services, namely, directing, marshalling, and tug services for anchoring aircraft to airport tarmacs; water distribution and supply services; aircraft waste collection and disposal for others; airport baggage handling and check-in services
41
Computer education training services; training services in the field of airport and airline services; developing curriculum for others in the field of air transportation
43
Catering for the provision of food and beverages
45
Security control of persons and luggage in airports; providing ground security assessments for the air transportation industry; inspection of baggage handling services for airlines
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