This advisory circular (AC) establishes a common, uniform definition of critical aircraft for all deliberations of the FAA Office of Airports, inclusive of planning and environmental, design and engineering, and financial decision-making regarding airport development.
![FAA Advisory Circular](https://crp.trb.org/acrpwebresource13/wp-content/uploads/sites/27/2021/05/Thumbnail-FAA-AC-800.jpg)