1.Inspection, maintenance, and modification of aircraft airframes, and maintenance related to line operations
2.Maintenance of aircraft engines and engine components
3.Maintenance of aircraft equipment and components
4.Painting of aircraft interiors/exteriors and parts
5.Inspection services for radio equipment and related systems
6.Maintenance and upkeep of crew rescue training facilities and equipment
7.Training programs for aviation personnel and related occupations
8.Maintenance of non-aircraft components
9.Manufacture and sale of processed maintenance materials
10.Inspection and maintenance of environmental pollution control facilities and related equipment for water, air, among others
11.Research and analysis related to environmental pollution control for water, air, among others
12.Creation, maintenance, and provision of chemical substance databases
13.All businesses incidental or related to the above