|Poor||Large open cracks, surface and edge spalling, vegetation growing through cracks and joints; or widespread, severe cracking with raveling and deterioration.|
|Fair||Mild surface cracking, unsealed joints, and slab edge spalling.|
|Good||No visible deterioration, or all cracks and joints are sealed.|
Note: National Plan of Integrated Airport Systems (NPIAS) airports include commercial service airports, reliever airports, and selected general aviation airports.
Source: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, National Transportation Statistics, table 1-25, available at www.bts.gov as of October 2013.