Preventive maintenance is crucial to help improve and extend the life cycle of airport facilities, systems, and components. An asset management plan implements preventive maintenance and allows an asset to reach its maximum life cycle or service life without a reactive approach. ACRP Research Report 273: Quantifying the Impacts of Delayed Maintenance of Airport Assets: A Guide, from TRB's Airport Cooperative Research Program, provides a framework, process, and tools designed to help airports manage their budgets and assets by quantifying the impact of delayed preventive maintenance.