AIRPORT PLANNING AND MANAGEMENT - Chapter 6 1) To what airports does 14 CFR Part 139 apply? What are the differences between rigid pavements and flexible pavements? What is meant by vibratory or dynamic testing? What are some of the symptoms of potential pavement failures? What are the typical useful life spans of airfield pavements? What is the difference between pavement maintenance and pavement rehabilitation? How is an airport’s ARFF index determined? What are the ARFF requirements of an airport based on its index? Why is a snow and ice control plan so important at some airports? What are the most common methods for snow and ice removal from airfields? What are some of the goals of an airport’s safety inspection program? What are some of the more common procedures associated with an airport’s safety inspection program? What are some of the hazards associated with birds and wildlife in the vicinity of an airfield? What are some of the control techniques associated with bird and wildlife hazard management?