All linear features in this data set are straight lines. RWY_ID is the unique identifier for each record in the dataset. There may be more than one runway (RWY_ID) located at a single airport. Airports can be individually identified by the landing facility location identifier (LOCID) or by the site number (SITE_NO) attribute.
BTS quality checks were to cross reference the place dataset with the state dataset, to determine that the spatial data and attribute data were accurate