Table 6.52 -- EDCS Attribute enumerant codes for attributes whose label begins with U
| Attribute label | Enumerant label | Definition | Related concepts | Code |
| UNCOVERING_HEIGHT_INFO | The accuracy or availability of uncovering height information for an object. | |||
| KNOWN | Uncovering height known. | 11 | ||
| UNKNOWN | Uncovering height unknown. | 12 | ||
| UNDERLYING_MATCHAR | The characteristics of the underlying material composition of an object. | |||
| BROKEN | Incomplete or fragmentary. | 11 | ||
| CALCAREOUS | Composed of, containing, or resembling calcium carbonate, calcium, or limestone; chalky. | 12 | ||
| COARSE | Consisting of relatively large particles or elements. | 13 | ||
| DECAYED | The gradual decomposition of dead organic matter. | 14 | ||
| FINE_MINUTE_PARTICLES | Fine, minute particles. | 15 | ||
| FLINTY | Like, containing, or consisting of flint. | 16 | ||
| GLACIAL | Describing the action, features, movements, and materials produced by or derived from glaciers or ice, or a region covered by glaciers or ice. | 17 | ||
| GRITTY | Like, containing, or consisting of grit. | 18 | ||
| GROUND | The top layer of the surface of the planet Earth. | 19 | ||
| HARD | Resistant to penetration or wear. | 20 | ||
| LARGE | Bigger or greater than is usual, typical or average. | 21 | ||
| MASONRY | Stonework or brickwork of any type. | 22 | ||
| MEDIUM | Being in the middle between an upper and lower amount, size, degree or value; average. | 23 | ||
| ROCKY | Like, containing, or consisting of rocks. | 24 | ||
| ROTTEN | Having been in the process of decay. | 25 | ||
| SMALL | Limited in size or amount when compared with what is typical or average. | 26 | ||
| SOFT | Easily penetrated or divided. | 27 | ||
| SPECKLED | Having small marks of a different colour from the surface on which it is found, and being usually found with a large number of other marks of the same type | 28 | ||
| STICKY | Being, made of, or covered with a substance that stays fixed to any surface it touches. | 29 | ||
| STIFF | Firm or hard, not easily bent or moved. | 30 | ||
| STREAKY | Having streaks, long thin marks which are easily noticed because they are very different from the material surrounding it. | 31 | ||
| TENACIOUS | Holding tightly to something. | 32 | ||
| UNEVEN | Not equal or equally balanced. | 33 | ||
| VARIED | Containing many different types or changing often. | 34 | ||
| VOLCANIC | Relating to, or produced by, a volcano. | 35 | ||
| UNDERLYING_MATERIAL_TYPE | The type of underlying material composition of an object. | |||
| ASH | The residual inorganic matter left after an organic substance has been completely burned. | 11 | ||
| BOULDERS | A detached rock mass having a diameter greater than 25,6 decimetres that has been rounded or otherwise shaped by chemical weathering, mechanical weathering, or abrasion in the course of transport. | 12 | ||
| CHALK | A fine-grained limestone or a soft form of calcium carbonate composed of finely divided marine shells. | 13 | ||
| CINDERS | A partly burned and extinguished piece of combustible material or particles of such a material | 14 | ||
| CIRRIPEDIA | Made from the calcareous shell of the cirripedia which is an order of Crustacea including the barnacles. | 15 | ||
| CLAY | A soft, very fine-grained natural sediment or aggregate that is composed mainly of particles of size less than 0,0039 millimetre, made up of hydrous silicates of aluminum mixed with various impurities. | 16 | ||
| COBBLE | Any rock fragment larger than a pebble and smaller than a boulder, ranging between 6,4 and 25,6 decimetres in diameter, and formed by abrasion in the course of transport. | 17 | ||
| CORAL | The calcium carbonate skeleton of certain colonial anthozoan coelenterates. | 18 | ||
| CORAL_HEAD | A large, knobbly or dome-shaped coral growth. | 19 | ||
| DIATOMS | A soft, fine, porous, yellow, light grey, or white siliceous sedimentary deposit; composed mainly of the microscopic skeletons of diatoms. | 20 | ||
| EVAPORITES | A nonclastic, sedimentary rock consisting of deposits of mineral salts produced by the evaporation of salt water. | 21 | ||
| FORAMINIFERA | Made from an order of chiefly marine protozoa in the phylum Sarcodina, whose shells are the main ingredient of chalk. | 22 | ||
| FUCUS | Any of various brown algae. | 23 | ||
| GLASS_REINFORCED_PLASTIC | Plastic that has been strengthened by the addition of glass fibres. | 24 | ||
| GLOBIGERINA | Made from the calcareous remains of a small genus of foraminiferids. | 25 | ||
| GRASS | Any plant of the large family Gramineae, having jointed stems, long, narrow leaves, and usually a distichously arranged flower on the axis of a spikelet; includes wheat, corn, rye, and bamboo. | 26 | ||
| GRASS_OR_THATCH | May be further delineated specifically as EE GRASS and EE THATCH. | 27 | ||
| GRAVEL | Rounded pebbles between 6,35 millimetres and 76,2 millimetres in diameter. | 28 | ||
| GROUND | The top layer of the surface of the planet Earth. | 29 | ||
| LAVA | A previously molten mass of rock material that is extruded by a volcano or through a fissure in the terrain surface. | 30 | ||
| MADREPORES | Any of various stony reef-building corals (order Madreporaria) of tropical seas that assume a variety of branching, encrusting, or massive forms. | 31 | ||
| MANGANESE | A pinkish-grey, chemically active metallic element that has the symbol Mn, atomic number 25, which resembles iron but is harder and more brittle. | 32 | ||
| MARL | A calcerous clay, or a mixture of clay and particles of calcite and dolomite, usually derived from shell fragments. | 33 | ||
| MATTES | 34 | |||
| MUD | Any very wet, soft soil. | 35 | ||
| MUSSELS | Any bivalve mollusc, especially an edible marine bivalve of the family Mytilidae living attached to wharf pilings, sea walls, and rocks in coastal seas, or a freshwater bivalve of the family Unionidae whose shell provides mother-of-pearl. | 36 | ||
| OOZE | A soft, soupy mud or slime that typically overlies the bottom of a lake, river, or estuary. | 37 | ||
| OYSTERS | The common name for sessile marine bivalve molluscs of the genera Ostrea and Crassostrea, family Ostreidae; adults have a rough, asymmetrical shell and a single adductor muscle. | 38 | ||
| PEBBLES | A small, roundish, water worn or wind worn rock fragment, larger than a granule and smaller than a cobble, generally ranging from 4 to 64 millimetres in diameter. | 39 | ||
| POLYZOA | The moss animals, a phylum of minute, moss like marine and freshwater creatures, with distinct alimentary canals, that form permanent colonies and reproduce by budding. | 40 | ||
| PTEROPODS | A calcareous deep-sea deposit consisting of at least 45% skeletal remains of marine organisms, especially pteropods. | 41 | ||
| PUMICE | A highly vesicular, glassy, volcanic rock, compositionally similar to rhyolite and often light enough to float on water. | 42 | ||
| QUARTZ | A transparent to translucent trigonal mineral with a vitreous lustre, commonly white or colourless but also occurring in a variety of colours, massive in habit or as hexagonal prismatic crystals, and having a specific gravity of 2,65 and a hardness of 7 on the Mohs scale; the most abundant and widely distributed of all minerals. | 43 | ||
| RADIOLARIA | A soft, fine-grained, deep-sea siliceous sediment composed of at least 30% skeletal remains of Radiolaria. | 44 | ||
| ROCK | Any naturally formed aggregate of one or more minerals, consolidated or not, with some degree of mineralogic and chemical constancy. | 45 | ||
| SAND | A small, somewhat rounded fragment or particle of rock ranging from 0,05 to 2 millimetres in diameter, and commonly composed of quartz. | 46 | ||
| SCHIST | A strongly foliated, crystalline, coarse-grained metamorphic rock with lamellar mineral constituents that allow it to split easily into thin flakes or slabs. | 47 | ||
| SCORIA | A cindery, vesicular crust formed on the surface of basaltic or andesitic lava as a result of the escape and expansion of gases before solidification. | 48 | ||
| SEA_TANGLE | Any of various brown algae, especially of the genus Laminaria. | 49 | ||
| SEAWEED | A general term applied to a plant or plants growing in a saltwater environment, especially marine algae. | 50 | ||
| SHELLS | The calcareous, horny, or chitinous covering or encasement of certain animals such as molluscs. | 51 | ||
| SHINGLE | A thin piece of wood, slate, or other material, usually rectangular and 20 to 25 centimetres across; laid in overlapping rows to cover the roof or walls of a building. | 52 | ||
| SILT | A very small rock fragment or mineral particle, smaller than a very fine grain of sand and larger than coarse clay; usually described as having a diameter from 0,002 millimetre to 0,06 millimetre; the smallest soil material that can be seen with the naked eye. | 53 | ||
| SPICULES | A minute, sharp, needle like body or part. | 54 | ||
| SPONGE | The soft, porous, fibrous framework of certain animals or colonies of the group Porifera, especially of the genera Spongia and Hippospongia, from which the living matter has been removed; it readily absorbs water and remains soft when wet; | 55 | ||
| STONE | Aggregation of solid mineral matter, also known as rock. Stone is commonly classified, according to its origin, into one of 3 major categories: igneous rock (formed by the cooling of magma), sedimentary rock (formed by the consolidation of sediments), and metamorphic rock (formed by extreme heat and pressure from other types of rock, including older metamorphic rock). | 56 | ||
| THATCH | 57 | |||
| TUFA | A soft, porous limestone rock or deposit that is formed from solution by springs or percolations. | 58 | ||
| URANIUM | A silver-white, hard, dense, malleable, ductile, and radioactive metallic element having the symbol U, atomic number 92. | 59 | ||
| VEGETATION_PRODUCTS | Produced by the plant life growing in a given region. | 60 | ||
| VOLCANIC | Relating to, or produced by, a volcano. | 61 | ||
| VOLCANIC_ASH | Fine or very fine pyroclastic particles, less than 4 millimetres in diameter, that are blown out from a volcanic explosion. | 62 | ||
| WATER | Water. | 63 | ||
| WOOD | The hard ligneous substance, composed primarily of xylem, that is found under the bark of the trunks and branches of trees and shrubs. | 64 | ||
| ZINC | A metallic element having the symbol Zn, atomic number 30. | 65 | ||
| URBAN_STREET_PATTERN | The predominant geometric configuration of streets found within the delineated region of an object. | |||
| CONCENTRIC_RADIAL_IRREG | Concentric, or radial irregular. | 11 | ||
| CONCENTRIC_RADIAL_REG | Concentric, or radial regular. | 12 | ||
| CURVILINEAR_CLUSTER | Curvilinear cluster | 13 | ||
| LINEAR_STRIP | Linear strip. | 14 | ||
| MIXED_CONCENTRIC_RADIAL | Mixed curvilinear cluster and concentric or radial. | 15 | ||
| MIXED_CURVILINEAR_CLUSTER | Mixed curvilinear cluster and rectangular grid. | 16 | ||
| MIXED_RECTANGULAR_GRID | Mixed concentric or radial and rectangular grid. | 17 | ||
| RECTANGULAR_GRID_IRREG | Rectangular, or grid irregular. | 18 | ||
| RECTANGULAR_GRID_REG | Rectangular, or grid regular. | 19 | ||
| URBAN_TERRAIN_ZONE_TYPE | The type of urban terrain zone, consisting of a class (e.g., attached, close-set, or open-set buildings) and a density level, e.g., core region, apartments/hotels, houses, industrial/storage, commercial ribbon, outer city, shopping centre, or administration/cultural. | |||
| ATTACHED_BUILDINGS | Attached buildings of an unknown type or function. | 11 | ||
| CLASS_A1 | Class A1:�Old city centres of cities with high building concentration and multiple story (5 to 50) buildings. Buildings occupy nearly all of their lots and are flush to sidewalks and they either attach or abut neighbours. Usually bordered by A2 and Dc1. | 12 | ||
| CLASS_A2 | Class A2:�Buildings fill lots to their perimeters, but are not as tall as those in A1. Buildings are attached or abutted to neighbours, are flush to streets, and are typically 5 to 10 stories. Land use is mainly apartments with some hotels and offices. | 13 | ||
| CLASS_A3 | Class A3:�Attached or abutted individual buildings (e.g., row houses) typically of 1 to 4 stories and most often residential. Buildings have little or no setback from sidewalk and they usually have a narrow back yard. | 14 | ||
| CLASS_A4 | Class A4:�Attached or abutted buildings, 2 to 10 stories, flush to the street with no setback or side set. These buildings have industrial or storage functions with little space for parking, Non-built upon space is primarily for material storage. | 15 | ||
| CLASS_A5 | Class A5:�Attached or abutted buildings, along commercial ribbon streets. Typically 1 to 5 stories, and old in age (newer types are Dc5), with no setback from sidewalk. These buildings often have a commercial function on the ground floor, with apartments above. | 16 | ||
| CLASS_A6 | Class A6:�Attached building or buildings 1 to 7 stories. Often a single institutional land use along a street otherwise occupied by office buildings or stores, e.g., a church, government building, hospital. This is in effect a single instance of a differing building rather than a zone. | 17 | ||
| CLASS_DC1 | Class Dc1:�Newer (post 1950) high-rise buildings (20 to 50 stories) which often have 'skins' of glass or some other decorative material. Typical use is for office buildings, while some are hotels. Buildings are spaced at approximately 13 metres. | 18 | ||
| CLASS_DC2 | Class Dc2:�Close-set apartment buildings (3 to 10 stories) with some set back from the lot boundary. Buildings are usually long and narrow with the narrow end to the street. Maximum building spacing is 13 metres. | 19 | ||
| CLASS_DC3 | Class Dc3: Common single family detached structures occupying a minimum amount of land. Houses are set back from the street, but have narrow separations between them, and narrow back yards. Maximum building spacing is 13 metres, and buildings are typically 1 to 3 stories. | 20 | ||
| CLASS_DC4 | Class Dc4:�Narrow, close-set buildings (2 to 10 stories) adjoining railroad tracks with docks for truck access. Buildings are often long and narrow, with the narrow end abutting the railroad lines. Maximum building spacing is 13 metres. | 21 | ||
| CLASS_DC5 | Class Dc5:�Detached buildings (1 to 5 stories) set back from the street to provide parking and access. These buildings often exhibit store windows at front. The majority of the surface is used for automobile parking. Maximum building spacing is 13 metres. | 22 | ||
| CLASS_DC6 | Class Dc6:�Master planned development with specifically set buildings of 1 to 7 stories, and vegetated sites that provide elegantly designed facilities and a sense of openness. Uses include schools, colleges, hospitals, or churches. Maximum building spacing is 13 metres. | 23 | ||
| CLASS_DC8 | Class Dc8:�Outer city. | 24 | ||
| CLASS_DO1 | Class Do1:�Large buildings (1 to 4 stories) with a distinctive lack of exterior windows, internally partitioned into individual shops, and surrounded by extensive parking lots. The main building is normally located in the centre or at the rear of the parking lot, with parking lots consuming approximately 70% of the terrain. Typical use is for shopping malls, professional/business parks. Space between buildings is 13 metres or more. | 25 | ||
| CLASS_DO2 | Class Do2:�Evenly spaced buildings in planned settings supporting fairly high population densities yet providing collective open space between buildings. Intervening ground space is landscaped or parking lots. Typical spacing between structures is 13 metres with buildings being 2 to 40 stories. | 26 | ||
| CLASS_DO3 | Class Do3:�Single family detached structures occupying a minimum amount of land. Buildings are set back on all sides. This classification is similar to Dc3 with the difference being that Do3 signifies more space between buildings, and often more vegetation. Spacing is 13 metres or more, with buildings being 1 to 3 stories. | 27 | ||
| CLASS_DO4 | Class Do4:�Modern industrial space with truck access and parking space, typically used for industry or storage. Buildings are widely separated and have paved surfaces around them. Spacing between structures is 13 metres or greater, and buildings are 1 to 4 stories. | 28 | ||
| CLASS_DO5 | Class Do5:�Modern, large, commercial buildings (1 to 5 stories) with large parking lots and located along wide streets. Typically used for large retail stores, equipment, automobile dealerships, and restaurants. Building spacing is 13 metres or more. | 29 | ||
| CLASS_DO6 | Class Do6:�Sizeable, master planned development with large buildings and maintained heavily vegetated sites that provide elegantly designed facilities and a sense of openness. Often used for schools, colleges, hospitals, churches, and administrative facilities. Buildings are spaced at 13 metres or more and are typically 1 to 7 stories. | 30 | ||
| CLOSE_SET_BUILDINGS | Close-set buildings of an unknown type or function. | 31 | ||
| DOES_NOT_CONFORM | Configuration does not conform to any urban terrain zone. | 32 | ||
| WIDELY_SPACED_BUILDINGS | Widely separated detached buildings of an unknown type or function. | 33 | ||
| USABLE_WEATHER_TYPE | The weather conditions under which an object is usable. | |||
| ALL | All-weather. | 11 | ||
| ALL_LIMITED_TRAFFIC | All-weather, however may have limited traffic due to weather. | 12 | ||
| FAIR_AND_DRY_ONLY | Under fair and dry conditions only. | 13 | ||
| WINTER_ONLY | Under winter conditions only. | 14 | ||
| USAGE | The primary user, function, or controlling authority, of an object. | |||
| ADVERTISING_BILLBOARD | 11 | |||
| AGRICULTURE | 12 | |||
| AIRCRAFT_CONTROL | Housing the equipment and personnel designed for the safe takeoff and landing of aircraft. | 13 | ||
| AIRCRAFT_FACILITY | Aircraft facility / airport reference point. | 14 | ||
| ALERT_APRON_OR_HARDSTAND | 15 | |||
| ALTERNATE_ENTRY | 16 | |||
| ALTERNATE_ENTRY_OR_EXIT | 17 | |||
| ALTERNATE_EXIT | 18 | |||
| ALTIMETER_CHANGE | 19 | |||
| ANCHOR_POINT | 20 | |||
| ANIMAL_SANCTUARY | 21 | |||
| APARTMENT | 22 | |||
| ARCP_CONTROL_POINT | 23 | |||
| ARIP_INITIAL_POINT | 24 | |||
| AS_A_FILL | 25 | |||
| AVALANCHE | 26 | |||
| BASE_FLIGHT_APRON | 27 | |||
| BERTHING_OF_VESSELS | 28 | |||
| BURIAL_GROUNDS | 29 | |||
| BUTTS | 30 | |||
| CABLE_SIGN_OR_PIPELINE | Cable sign or pipeline indicator. | 31 | ||
| CAUSEWAY | As a causeway. | 32 | ||
| CITY | 33 | |||
| CLOCK | 34 | |||
| CLOSED | 35 | |||
| COMMERCE | 36 | |||
| COMMERCE_OR_RECREATION | May be further delineated specifically as EE COMMERCE and EE RECREATION. | 37 | ||
| COMMUNAL | 38 | |||
| COMMUNICATION | Relating to the transmission or receipt of messages via electronic signals, either by wire or wireless means. | 39 | ||
| COMPASS_ADJUSTMENT | 40 | |||
| COMPASS_ROSE_HARDSTAND | 41 | |||
| COMPULSORY_REPORT_POINTS | Compulsory reporting points. | 42 | ||
| CONTAINER | 43 | |||
| DECOY | 44 | |||
| DEPOT_APRON | 45 | |||
| DISPERSAL_HARDSTAND | 46 | |||
| DRAG_STRIP | 47 | |||
| DRINKING_WATER | Water safe for human consumption; potable or drinking water. | 48 | ||
| DUGOUT | 49 | |||
| ENGINE_RUN_UP_HARDSTAND | 50 | |||
| ENGINE_TEST_PAD | Engine test pad or apron. | 51 | ||
| ENTRY | 52 | |||
| ENTRY_OR_STARTING | 53 | |||
| EXIT | 54 | |||
| EXIT_OR_END | 55 | |||
| FEDERAL | 56 | |||
| FEEDER | 57 | |||
| FILL | 58 | |||
| FILTRATION_POND | 59 | |||
| FINAL_APPROACH_FIX | 60 | |||
| FIREBREAK | 61 | |||
| FIRING_IN_HARDSTAND | 62 | |||
| FLOOD_BARRAGE | 63 | |||
| FLOOD_CONTROL | Flood control and/or rate measurement. | 64 | ||
| FOREST_PRESERVE | 65 | |||
| GOVERNMENT | Of or pertaining to the administration and control of a political unit. | 66 | ||
| GOVERNMENT_OR_INSTITUTION | May be further delineated specifically as EE GOVERNMENT and EE INSTITUTION. | 67 | ||
| HANGER_OR_APRON | 68 | |||
| HIGH_ALTITUDE_ENROUTE | 69 | |||
| HIGHWAY_SIGN | 70 | |||
| HOTEL | A building used to provide lodging, and usually meals and other services, for travellers and other paying guests. | EC HOTEL | 71 | |
| INDUSTRY | 72 | |||
| INITIAL_APPROACH_FIX | 73 | |||
| INSTITUTION | 74 | |||
| INSULAR | 75 | |||
| INTAKE | 76 | |||
| INTERNATIONAL | 77 | |||
| INTERSTATE | 78 | |||
| IRRIGATION | 79 | |||
| JOINT | Joint military or civilian. | 80 | ||
| LEVEE_OR_DIKE | 81 | |||
| LIMITED | 82 | |||
| LOW_ALTITUDE_ENROUTE | 83 | |||
| LOW_HIGH_ALTITUDE_ENROUTE | Low and high altitude enroute. | 84 | ||
| MAINTENANCE_HARDSTAND | 85 | |||
| MANDATORY | 86 | |||
| MARINE | A portion of the ocean regularly used for the movement of people or cargo. | 87 | ||
| MARITIME_STATION | 88 | |||
| MEDICAL | 89 | |||
| MILEAGE_BREAK_DOWN | 90 | |||
| MILITARY | 91 | |||
| MILITARY_DISTRICT | 92 | |||
| MINING | For people and supplies in support of mining operations. | 93 | ||
| MISSED_APPROACH_POINT | 94 | |||
| MIXED_URBAN | Mixed urban or built-up land. | 95 | ||
| MOTEL | A building used to provide lodging for motorists in rooms usually having direct access to an open parking lot, e.g., a motel, motor court or motor lodge. | EC MOTEL | 96 | |
| MOTEL_OR_HOTEL | May be further delineated specifically as EE MOTEL and EE HOTEL. | 97 | ||
| NATIONAL | 98 | |||
| NAVAID_CHANGEOVER | 99 | |||
| NAVIGATION_CHECK_POINT | 100 | |||
| NOMAD | For nomadic people and their supplies. | 101 | ||
| NON_COMP_REPORT_POINTS | Non-compulsory reporting points. | 102 | ||
| NON_MILITARY | Civilian or public. | 103 | ||
| NON_PRECISION_INST_APPROACH | Non-precision instrument approach. | 104 | ||
| OIL_EXPLORATION | For people and supplies in support of the search for, or production of, hydrocarbon based fuels such as oil or gas. | 105 | ||
| OPEN | 106 | |||
| OPERATIONAL_APRON | Operational apron or hardstand. | 107 | ||
| OUTFALL | 108 | |||
| PAD_HARDSTAND | 109 | |||
| PARKING_HARDSTAND | 110 | |||
| POWER | 111 | |||
| PRECISION_INST_APPROACH | Precision instrument approach. | 112 | ||
| PRIMARY | Primary or 1st order. | 113 | ||
| PRISONER | 114 | |||
| PRIVATE | 115 | |||
| PROHIBITED_AREA | 116 | |||
| PROVINCIAL | 117 | |||
| QUATERNARY | Quaternary or 4th order. | 118 | ||
| QUINTARY | Quintary of 5th order. | 119 | ||
| RADAR | 120 | |||
| RECREATION | 121 | |||
| RECREATION_OR_INDUSTRIAL | May be further delineated specifically as EE RECREATION and EE INDUSTRY. | 122 | ||
| REFUELING_HARDSTAND | 123 | |||
| REFUGEE | 124 | |||
| REGIONAL | 125 | |||
| RESERVE | Reserve or reservation. | 126 | ||
| RESERVED | 127 | |||
| RESIDENCE | 128 | |||
| RESIDENCE_OR_AGRICULTURE | May be further delineated specifically as EE RESIDENCE and EE AGRICULTURE. | 129 | ||
| RESTRICTED | 130 | |||
| RETAIL | Designed for the sale of goods directly to the public. | 131 | ||
| RETAINING | 132 | |||
| ROCK_SHED | 133 | |||
| SCHOOL | 134 | |||
| SCOREBOARD | 135 | |||
| SEA_PLANE_LANDING_AREA | 136 | |||
| SECONDARY | Secondary or 2nd order. | 137 | ||
| SINGLE_POINT_MOORING | 138 | |||
| SNOW_SHED | 139 | |||
| STATE | 140 | |||
| STOL_APPROACH | Short take-off and landing approach. | 141 | ||
| STUB_APRON | 142 | |||
| TELEGRAPH | 143 | |||
| TELEPHONE | 144 | |||
| TERMINUS_OR_TERMINAL | 145 | |||
| TERTIARY | Tertiary or 3rd order. | 146 | ||
| TIMEBALL | 147 | |||
| TOURIST | 148 | |||
| TRANSACTION | 149 | |||
| TRANSIENT_APRON | 150 | |||
| TRANSPORTATION | 151 | |||
| TRIANGULATION | 152 | |||
| TRIBAL | 153 | |||
| TURNING | 154 | |||
| UN_ID_AIRCRAFT_LANDING | Unidentified aircraft landing site. | 155 | ||
| UNPOPULATED | 156 | |||
| UTILITY_AND_COMMUNICATION | Utilities and communication. Utilities: Relating to the services provided to the population of a region, such as electricity, gas, water, or sewage, excluding transportation. Communications: Relating to the transmission or receipt of messages via electronic signals, either by wire or wireless means. | 157 | ||
| VISUAL_APPROACH | 158 | |||
| VISUAL_DESCENT_POINT | 159 |