摘要: |
Transforming the nations air transportation system is a national imperative. The current system is one of the safest in the world, but it is experiencing unprecedented challenges: demand for air transportation is outpacing capacity; delays, cancellations, and diverted flights are increasing at alarming rates; and new and different types of aircraft are creating gridlock in the skies. Added to these challenges is an aging infrastructure, making the systems reliance on ground-based radars operationally obsolete and increasingly inefficient. Greenhouse gas emissions and other environmental concerns are arising from inefficient use of aircraft and airspace, and security concerns are growing. These problems cannot be addressed by upgrading or minimally changing the current system. A total transformation is needed. |