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.
National Plan of Integrated Airport Systems (NPIAS) airports include commercial service airports, reliever airports, and selected general aviation airports.
Sources:As cited in U.S. Department of Transportation, Bureau of Transportation Statistics, National Transportation Statistics, table 1-25, available at https://www.bts.gov/.
Last Updated: October 2017