AIRPORT PLANNING AND MANAGEMENT - Chapter 9   1) What is airport accounting? What are the different types of budget strategies found at airports? What are the four categories of O&M expenses that exist at airports? What specific expenses lie within each category? What are the differences between operating and nonoperating revenues? What areas of airport operations are principal areas of potential litigation against airports? What are the primary differences between the residual cost approach and compensatory approach? What is a majority-in-interest clause? How do these clauses affect airport management? How are airport facilities and services priced? What grant programs exist on the federal level for airports? How are these programs funded? How may funds from these programs be used at airports? What types of financing programs, or bond issues, are available to airports? How do bond ratings affect the financial strategies of airports? What forms of privatization exist at airports? How do each of these strategies differ?