The following are Operating Expense- Materials Purchased categories for . There are also links below that will allow users to drill down further and determine what actually composes these categories. As a reminder
- Aircraft Fuel and Oil Aircraft Fuel and Oil as well as Fuel Taxes. It should be noted some airlines do not purchase there own fuel particular those in the regional fee-for departure model.
- Maintenance Material Materials - air-frames - aircraft engines - other flight equipment - ground property and equipment, Shop and Servicing Supplies, Automotive supplies, Chemicals and solvents, Cleaning compounds and supplies, Composition materials, Electrical supplies, Fuels and lubricants, Glass and glass products, Hardware items, Lumber and wood products, Paints, lacquers and thinners, Plumbing supplies, Rubber and plastic goods, Sheet metal, Small tools, Special clothing and devices, Textiles and leather goods, Tube, bar and strip materials
- Passenger Food Beverage purchases, Commissary supplies, Communications expense, Food purchases, Food service uniforms, Outside catering charges
- Other Materials Utilities:Light, heat, power and water, Stationery, printing and office supplies, Blue prints, Chemicals and solvents, Cleaning compounds and supplies, Drafting and engineering supplies, Flight crew supplies, Labels and small signs, Manuals and publications (company), Printing and duplicating supplies, Shipping and mailing supplies, Standard forms - company, Standard forms - government, Stationery and paper products, Textiles and leather goods, Tickets and ticket stock, Other supplies: Cleaning compounds, Electrical, Medical, Photographic, Safety, Training