Table D.22 -- EAs whose label begins with U
| Label | Groups | Reference type | References |
| UNCOVERING_HEIGHT_INFO | BATHYMETRY | UD | none |
| UNDERBRIDGE_CLEARANCE | DIMENSION, LAND_TRNSP | IR | [FACC, Annex B] |
| UNDERLYING_MATCHAR | SURFACE_MATERIAL | IR | [FACC, Annex B] |
| UNDERLYING_MATERIAL_TYPE | OCEAN_FLOOR, SURFACE_MATERIAL | IR | [FACC, Annex B] |
| UPSTREAM_HEIGHT | POSITION | IR | [FACC, Annex B] |
| URBAN_BUILDING_LGTINT | ANCILLARY_ARTEFACT | UD | none |
| URBAN_STREET_LGTINT | ANCILLARY_ARTEFACT | UD | none |
| URBAN_STREET_PATTERN | LAND_TRNSP | IR | [FACC, Annex B] |
| URBAN_TERRAIN_ZONE_TYPE | USAGE_REGION | IR | [UTZB] |
| USABLE_LENGTH | DIMENSION | UD | none |
| USABLE_WEATHER_TYPE | AIR_TRNSP | IR | [FACC, Annex B] |
| USAGE | USAGE_REGION | IR | [FACC, Annex B] |
| UTM_GRID_EASTING | POSITION | IR | [FACC, Annex B] |
| UTM_GRID_NORTHING | POSITION | IR | [FACC, Annex B] |
| UTM_PRIMARY_GRID_ZONE | POSITION | IR | [FACC, Annex B] |
| UTM_SECONDARY_GRID_ZONE | POSITION | IR | [FACC, Annex B] |
| UTM_SQUARE | POSITION | IR | [FACC, Annex B] |