Table 6.32 -- EDCS Attribute enumerant codes for attributes whose label begins with A

Attribute label Enumerant label Definition Related concepts Code
ACCURACY   The accuracy of a geographic position.    
  ABROGATED Abrogated.   11
  ACCURATE Conforms with a standard, or accepted value, e.g., accurate.   12
  APPROXIMATE Approaching closely (approximates) but not attaining a specified accuracy or a precision consistent with the quality of the observations.   13
  DISPUTED Disputed.   14
  DOUBTFUL Doubtful.   15
  PRECISE High refinement in the (precise) performance of an operation or in the statement of a result.   16
  UNDISPUTED Undisputed.   17
ACOUSTIC_FREQUENCY_CODED   The acoustic frequency.    
  10_HZ 10 hertz.   11
  12r5_HZ 12,5 hertz.   12
  15_HZ 15 hertz.   13
  20_HZ 20 hertz.   14
  25_HZ 25 hertz.   15
  31r5_HZ 31,5 hertz.   16
  40_HZ 40 hertz.   17
  50_HZ 50 hertz.   18
  63_HZ 63 hertz.   19
  80_HZ 80 hertz.   20
  100_HZ 100 hertz.   21
  125_HZ 125 hertz.   22
  150_HZ 150 hertz.   23
  200_HZ 200 hertz.   24
  250_HZ 250 hertz.   25
  300_HZ 300 hertz.   26
  315_HZ 315 hertz.   27
  400_HZ 400 hertz.   28
  500_HZ 500 hertz.   29
  630_HZ 630 hertz.   30
  800_HZ 800 hertz.   31
  1000_HZ 1 000 hertz.   32
  1250_HZ 1 250 hertz.   33
  1500_HZ 1 500 hertz.   34
  2000_HZ 2 000 hertz.   35
  2500_HZ 2 500 hertz.   36
  3150_HZ 3 150 hertz.   37
  3500_HZ 3 500 hertz.   38
  4000_HZ 4 000 hertz.   39
  5000_HZ 5 000 hertz.   40
  6300_HZ 6 300 hertz.   41
  8000_HZ 8 000 hertz.   42
  10_KHZ 10 kilohertz.   43
  12r5_KHZ 12,5 kilohertz.   44
  14_KHZ 14 kilohertz.   45
  15_KHZ 15 kilohertz.   46
  20_KHZ 20 kilohertz.   47
  25_KHZ 25 kilohertz.   48
  31r5_KHZ 31,5 kilohertz.   49
  40_KHZ 40 kilohertz.   50
  50_KHZ 50 kilohertz.   51
  63_KHZ 63 kilohertz.   52
  80_KHZ 80 kilohertz.   53
  100_KHZ 100 kilohertz.   54
  125_KHZ 125 kilohertz.   55
  150_KHZ 150 kilohertz.   56
  200_KHZ 200 kilohertz.   57
  250_KHZ 250 kilohertz.   58
  315_KHZ 315 kilohertz.   59
  400_KHZ 400 kilohertz.   60
  500_KHZ 500 kilohertz.   61
  630_KHZ 630 kilohertz.   62
  800_KHZ 800 kilohertz.   63
AERONAUTICAL_LIGHT_FUNCTION   The type of lighting provided or type of lighting system used.    
  AERONAUTICAL     11
  AIR_FORCE_OVERRUN     12
  AIRPORT_TERMINAL     13
  ALSF_I Approach lighting system with sequential flashing.   14
  ALSF_II Approach lighting system with sequential flashing.   15
  ALTERNATE_CENTRELINE Alternate centreline and bar approach.   16
  APAP_ALIGNMENT APAP alignment of elements systems.   17
  APRON_FLOOD     18
  ARTICULATED     19
  AUXILIARY     20
  BEACON A station supporting a signalling or guiding device, such as a light or radio signal used for guidance.   21
  BOUNDARY     22
  CALVERT_BRITISH     23
  CENTRE_AND_DOUBLE_ROW     24
  CENTRE_ROW     25
  CENTRE_ROW_1_HI_INTENSITY Centre row, category 1, high intensity.   26
  CENTRE_ROW_2_HI_VISIBILITY Centre row, category 1, high visibility.   27
  CENTRELINE_2_CROSSBAR Centreline, 2 crossbars approach.   28
  CENTRELINE_AND_BAR Centreline and bar.   29
  CENTRELINE_HI_INTENSITY Centreline, high-intensity approach.   30
  CROSS     31
  FISHING     32
  FLARES     33
  FOG_DETECTOR     34
  FORMER_NATO_STANDARD     35
  HARBOUR A natural or artificial improved body of water providing protection for vessels and anchorage/docking facilities. EC HARBOUR 36
  HIGH_INTENSITY_RUNWAY     37
  HONG_KONG_CURVE     38
  HORIZONTAL     39
  IDENTIFICATION_BEACON     40
  LANDING_DIRECTION Landing direction indicator.   41
  LCVASI_LOW_COST     42
  LEFT_ROW_HIGH_INTENSITY     43
  LEFT_SINGLE_ROW     44
  LOW_INTENSITY_RUNWAY     45
  MAJOR     46
  MALSF     47
  MALSR     48
  MEDIUM_INTENSITY_RUNWAY     49
  MINOR     50
  NARROW_MULTI_CROSS     51
  NATO_STANDARD     52
  NAVY_PARALLEL_ROW_AND_X Navy parallel row and crossbar.   53
  NEON_LADDER     54
  NONE_AVAILABLE     55
  OBSTRUCTION     56
  OBSTRUCTION_LIGHTING     57
  OCCASIONAL     58
  ODALS Omni-directional approach landing system.   59
  OPTICAL_LANDING_SYSTEM     60
  OTHER_AIRPORT_LIGHTING     61
  OTHER_APPROACH_LIGHTING     62
  OVERRUN_CENTRELINE     63
  PORTABLE_APPROACH     64
  PORTABLE_RUNWAY     65
  PRECISION_APPROACH Precision approach path indicator.   66
  PRIMARY     67
  PRIVATE     68
  RAIL Runway alignment indicator lights.   69
  RANGE     70
  ROTATING_BEACON     71
  RUNWAY     73
  RUNWAY_CENTRELINE Runway centreline lighting.   73
  RUNWAY_EDGE     74
  RUNWAY_END Runway end identification lighting.   75
  RUNWAY_FLOOD     76
  RUNWAY_OR_RUNWAY_EDGE May be further delineated specifically as EE RUNWAY and RUNWAY_EDGE.   77
  SEASONAL     78
  SECONDARY     79
  SEQUENCED_STROBE     80
  SINGAPORE_CENTRELINE Singapore centreline approach.   81
  SINGLE_ROW_CENTRELINE     82
  SSALF     83
  SSALR     84
  STROBE     85
  T_VASI_T_BAR     86
  TAXIWAY_LIGHTING     87
  THRESHOLD     88
  TIDAL     89
  TOUCHDOWN_ZONE_LIGHTING     90
  TWO_PARALLEL_ROW     91
  US_CONFIGURATION_B     92
  VARIABLE_INTENSITY_RUNWAY     93
  VASI Visual approach slope indicator.   94
  VASI_2_BAR Visual approach slope indicator - 2 bar.   95
  VASI_3_BAR Visual approach slope indicator - 3 bar.   96
  VASI_PULSATING Visual approach slope indicator - pulsating.   97
  VASI_WITH_INDICATOR Visual approach slope indicator with indicator for threshold crossing height.   98
  VERTICAL     99
  WIND_INDICATOR     100
AEROSOL_TYPE   The type of particle in an aerosol.    
  DUST Finely divided, dry, solid matter of silt- and clay-sized soil particles, less than 62,5 micrometres in diameter.   11
  HAZE Fine dust, salt, mist, smoke, or other solid particles dispersed throughout a portion of the atmosphere, which are invisible to the naked eye but which diminish horizontal visibility and give the atmosphere an opalescent appearance, rendering distant objects indistinct and subdued in colour.   12
  MIST An aggregate of microscopic and hygroscopic water droplets suspended in the atmosphere, producing a thin, greyish veil that reduces visibility.   13
  NO_AEROSOL     14
  OCEAN_SPRAY A stream of ocean water broken up into minute particles and propelled through air or another gas.   15
  SAND A small, somewhat rounded fragment or particle of rock ranging from 0,05 to 2 millimetres in diameter, and commonly composed of quartz.   16
  SMOKE The visible mixture given off by a burning substance, consisting of a suspension of tiny particles of carbon in hydrocarbon gases or in air or any visible cloud of small particles suspended in the atmosphere.   17
  VOLCANIC_ASH Fine or very fine pyroclastic particles, less than 4 millimetres in diameter, that are blown out from a volcanic explosion.   18
AIRCRAFT_ICING_INTENSITY   The estimated intensity of ice formation that may be expected by an aircraft.    
  CLEAR_ICE A glossy, clear, or translucent ice formed by the relatively slow freezing or large supercooled water droplets.   11
  HEAVY The rate of ice accumulation is such that de-icing/anti-icing equipment fails to reduce or control the hazard. Immediate flight diversion is necessary.   12
  LIGHT The rate of ice accumulation may create a problem if flight is prolonged in this environment (over 1 hour). Occasional use of de-icing/anti-icing equipment removes/prevents accumulation; it does not present a problem if the de-icing, anti-icing equipment is   13
  MODERATE The rate of ice accumulation is such that even short encounters become potentially hazardous and use of de-icing, anti-icing or flight diversion is necessary.   14
  NO_ICING No icing accumulates.   15
  RIME_ICE Rough, milky, opaque ice formed by the instantaneous freezing of small supercooled water droplets.   16
  TRACE Ice accumulation becomes perceptible. Rate of accumulation is slightly greater than the rate of sublimation. It is not hazardous even though de-icing/anti-icing equipment is not utilized unless encountered for an extended period of time (over 1 hour).   17
AIRCRAFT_ICING_TYPE   The type of ice that is expected to accumulate on the surface of an aircraft.    
  CLEAR Relatively transparent ice having a homogeneous structure and few air pockets may accumulate on aircraft surfaces.   11
  FROST A white, feathery deposit of interlocking ice crystals formed by the sublimation of water vapour may accumulate on aircraft surfaces.   12
  MIXED Combination of clear ice, rime ice, and frost.   13
  NONE_PRESENT No icing present.   14
  RIME An opaque, granular deposit of ice crystals may form when droplets of supercooled fog come in contact with a aircraft vertical surfaces.   15
AIRFIELD_TYPE   The type of an airfield.    
  AIRFIELD     11
  AIRPORT     12
  AIRPORT_OR_FIELD A landing field and adjacent terrain providing for the arrival and departure of aircraft, including facilities for passenger service, aircraft repair and maintenance, air traffic control, and other related activities. May be further delineated specifically as EE AIRPORT and EE AIRFIELD.   13
  DAFIF_AIRPORT_TYPE_A Active civil airports controlled and operated by civil authorities primarily for use by civil aircraft, although military may have landing privileges and/or contract rights. Minimum facilities are available which include: control tower (or some similar control system, such as a Flight Service Station which issues clearances and advisories when there is no tower or the tower is not in operation), lighting (e.g., may be flare pots), petrol, oils and lubricants (POL), and facilities for organizational maintenance or better.   14
  DAFIF_AIRPORT_TYPE_B Active, joint (civil and military) use. Airports jointly controlled, used and/or operated by both civil and military agencies. The military agencies must be permanent operational flight line type tenants, with or without aircraft stationed on the airport. Facilities are the same as for civil (A-type) airports.   15
  DAFIF_AIRPORT_TYPE_C Active military airports controlled and operated by military authorities primarily for use by military aircraft, although civil aircraft may have landing privileges and/or contract rights. Facilities are the same as for civil (A-type) airports.   16
  DAFIF_AIRPORT_TYPE_D Active airports having permanent type surface runways with less than the minimum facilities required for A-type airports. For the United States, the FAA term "Inactive" is incorporated into this category.   17
  EMERGENCY A tract of land set aside for the take-off and landing of airplanes or helicopters in times of emergency.   18
  GENERAL_AVIATION Light or general aviation aircraft operating only.   19
  GLIDER Glider site.   20
  HANG_GLIDER Hang glider site.   21
  HELIPORT A transportation depot designed for takeoffs and landings of helicopters.   23
  HELICOPTER Helicopter site.   24
  HELIPORT_AT_HOSPITAL A hospital-local transportation facility designed for takeoffs and landings of helicopters.   25
  LIGHT Microlight or ultralight site.   26
  MAJOR_AIRFIELD A major (controlled) airport that has an operating control tower. Air traffic control is responsible for providing for the safe, orderly, and expeditious flow of air traffic at airports where the type of operations and/or volume of traffic requires such a service. Pilots operating from a controlled airport are required to maintain two-way radio communication with air traffic controllers, and to acknowledge and comply with their instructions.   27
  MINOR_AIRFIELD A minor (uncontrolled) airport does not have an operating control tower. Two-way radio communications are not required, although it is a good operating practice for pilots to transmit their intentions on the specified frequency for the benefit of other traffic in the vicinity.   28
  PARA Parascending or parasailing site.   29
  SEAPLANE_BASE An expanse of water and supporting facilities capable of supporting seaplane operations (seaplane: an aircraft capable of taking off and landing on water; supported on water by pontoons, or flats, or by a specially designed fuselage.)   30
  UNDEFINED_LANDING Undefined landing site.   31
  WINCH_LAUNCHED_HANG_GLIDER Winch launched hang glider site.   32
AIRSPACE_ROUTE_TYPE   The type of a specified route designed for channelling the flow of traffic as necessary for the provision of air traffic services.    
  ADVISORY Advisory: A specified route designed for the flow of traffic as necessary for the provision of air traffic services.   11
  AIR_ROUTE Air route: The navigable airspace between two points, identified to the extent necessary for the application of flight rules.   12
  AIRWAY Airway: A Class E airspace established in the form of a corridor, the centreline of which is defined by radio navigational aids.   13
  AREA_NAVIGATION Area navigation: A method of navigation that permits aircraft operation on any desired course within the coverage of station referenced navigation signals or within the limits of a self-contained system capability. Random area navigation routes are direct routes, based on area navigation capability, between waypoints defined in terms of latitude/longitude coordinates, degree/distance fixes, or offsets from published or established routes/airways at a specified distance and direction   14
  ATLANTIC     15
  BAHAMAS     16
  CANADIAN_CONTROL Canadian control area tracks.   17
  CORRIDOR Air corridor: A restricted air route of travel specified for use by friendly aircraft and established for the purpose of preventing friendly aircraft from being fired on by friendly forces.   18
  DIRECT Straight line (direct) flight between two navigational aids, fixes, points, or any combination thereof. When used by pilots in describing off airway routes, points defining direct route segments become compulsory reporting points unless the aircraft is under radar contact.   19
  HELICOPTER Helicopter route.   20
  HELICOPTER_NA_ONE_ENGINE Helicopter route; not available to single engine.   21
  JET     22
  LOW_FLYING Low-flying route.   23
  MILITARY Routes used by defence, reserve, and air guard forces for the purpose of conducting low altitude navigation and tactical training in both IFR and VFR weather conditions below 3 048 metres (10 000 feet) MLS at airspeeds in excess of 128,6 metres per second (250 knots) indicated air speed.   24
  N_AMERICA     25
  OCEANIC     26
  PURPLE_AIRWAY Special temporary airways created for flights by certain members of the royal family, notified by NOTAM; e.g., purple airway.   27
  ROYAL_HELICOPTER Royal helicopter route.   28
  ROYAL_LOW_LEVEL Royal low level corridor.   29
  SUBS Substitute route: A route assigned to pilots when any part of an airway or route is unusable because of NAVAID status. These routes consist of:� a. Substitute routes, which are shown on national government charts, b. Routes defined by ATC as specific NAVAID radials or courses. c. Routes defined by ATC as direct to or between NAVAIDs.   30
  TACAN TACAN: An ultra-high frequency electronic navigation aid, which provides suitably equipped aircraft with a continuous indication of bearing and distance to the selected TACAN station. The distance element can be received by civilian DMF equipment, but otherwise TACAN is principally a military NAVAID.   31
AIRSPACE_USE_BOUNDARY   The type of designated airspace within which some or all aircraft may be subject to air traffic control.    
  ADVISORY Airport advisory region: The region within 16,09 kilometres (10 statute miles) of an airport where a control tower is not operating but where a Flight Service Station is located. At such locations, the FSS provides advisory service to arriving and departing aircraft.   11
  ALT_SETTING_REGION Altimeter setting region: A geographical region for which the lowest value of QNH (altitude above mean sea level based on local station pressure) is forecast hourly and relayed by air traffic control centres; e.g., altimeter setting region.   12
  CONTROL_ZONE Control zone or region: A region of controlled airspace extending upwards from ground level to a specified upper limit; a region of protected airspace surrounding an airfield bounded by a circle of 3,70 kilometres (2 nautical miles) or 4,63 kilometres (2,5 nautical miles) radius (depending on runway length) centered on the mid-point of the longest runway. Permission is required for entry into and movement in an ATZ.   13
  FLIGHT_INR Flight information region: A region of airspace where a variety of flight information (but not flight control) is provided by specific Flight Information Centres, e.g., the United Kingdom has two flight information regions, London and Scottish.   14
  MILITARY_CLIMB_CORRIDOR Military climb corridor: Positive controlled airspace of defined vertical and horizontal dimensions extending from a military airfield.   15
  MILITARY_CTZ Military control zone or region: A region of protected airspace surrounding certain military airfields which normally extends for a 9,26 kilometre (5 nautical mile) radius around the airfield and upwards from the surface to 914,4 metres (3 000 feet) above aerodrome level. A 'stub' projection protects the final approach path to the main runway outwards from the MATZ boundary, enclosing a region 1,852 kilometre (two nautical mile) either side of the extended runway centerline and upwards from 304,8 metres (1 000 feet) above the surface to 914,4 metres (3 000 feet) above aerodrome elevation. Although recognition of a MATZ is not mandatory for civil aircraft, all MATZ aerodromes offer a penetration service to civil traffic during operational hours.   16
  MOUNTAINOUS Designated mountainous region.   17
  SPECIAL_RULES_ZONE Special rules zone: A region of protected airspace surrounding an airfield and extending from the surface upwards to a specific level which affords safety to air traffic movements in the vicinity of airfields whose traffic level does not warrant the establishment of a Control Zone.   18
  SUB_FLIGHT_INR Sub-flight information region.   19
  TERMINAL_CONTROL Terminal control region: A region of controlled airspace at the intersection of airways in the vicinity of control zones around major airports.   20
AIRSPACE_USE_LIMITATION   The type of airspace wherein activities must be confined because of their nature and/or wherein limitations may be imposed upon aircraft operations.    
  AIR_EXERCISE Air exercise region.   11
  ALERT Alert region.   12
  BIRD_HAZARD Bird hazard sites.   13
  BIRD_SANCTUARY Bird sanctuary.   14
  CAUTION Caution region.   15
  CONTROLLED_FIRING Controlled firing region.   16
  DANGER Danger region.   17
  DEFENSE Defensive region.   18
  GAS_VENTING_STATION Gas venting station.   19
  HAZARD_TO_AIRCRAFT Hazard to aircraft.   20
  HELICOPTER_PROTECT Helicopter protection.   21
  HIGH_INTENSITY_RADIO High-intensity radio transmissions in vicinity.   22
  INDUSTRIAL_HAZARDS Industrial hazards or object needing protection.   23
  INTENSE_AIR_ACTIVITY Region of intense air activity.   24
  LIGHT_FLYING Region of intensive microlight or ultralight flying.   25
  LOW_FLY_AVOIDANCE Low-flying avoidance region.   26
  LOW_FLY_DEDICATED_USER Low-flying dedicated user region.   27
  LOW_FLY_TACTICAL_TRAINING Low-flying tactical training avoidance.   28
  MEDICAL Health resorts or medical establishments.   29
  MILITARY_FLYING Military flying zone.   30
  MILITARY_OPERATIONS Military operations zone.   31
  MINK_FARM Mink farm.   32
  NATURE_RESERVE Nature reserve, park, or conservation site to be avoided.   33
  NON_FREE_FLYING No free-flying.   34
  OPERATING Operating region.   35
  PARACHUTE_DROP_ZONE Parachute drop zone.   36
  PROHIBITED Prohibited region.   37
  PROHIBITED_VFR Prohibited - visual flight rules.   38
  PROVOST_MARSHAL Limitations on airspace use imposed by local military police under the direction of the Provost Marshal.   39
  RESTRICTED Restricted region.   40
  SPARSELY_SETTLED Sparsely settled region.   41
  TEMP_RESERVE Temporary reserved airspace.   42
  TOWN_TO_BE_AVOIDED Town to be avoided.   43
  WARNING Warning region.   44
AQUEDUCT_TYPE   The type of an aqueduct.    
  SHAFT Qanat, kanat, or karez shaft.   11
  UNDERGROUND An underground (below surface level) pipe or artificial channel designed to transport water from a remote source, usually by gravity.   12
ARRESTING_GEAR_TYPE   Type of device used to stop an uncontrolled aircraft at the end of a runway.    
  CABLE That part of an aircraft arresting system which spans the runway surface or flight deck landing site and is engaged by the aircraft arresting hook; e.g., aircraft arresting wire or cable.   11
  JET_BARRIER A device, not dependent on an aircraft arresting hook, used to stop an aircraft by absorbing its forward momentum in an emergency landing or an aborted takeoff; e.g., barricade, or emergency barrier.   12
  NET A type of aircraft arresting system where the principle barrier is a net.   13
ASSET_TYPE   The type of asset, e.g., vehicle, equipment or personnel.    
  AIR_DEFENSE Air or missile defence equipment.   11
  ARMOURED_FIGHTING_VEH Armoured fighting vehicle, e.g., IFV, APC, SP mortar, armoured car, chemical reconnaissance, anti-tank guided missile launcher.   12
  ARMOURED_UTILITY_VEH Armoured utility vehicle, e.g., engineering vehicle, tracked load carrier, towing vehicle, recovery vehicle, or ALVB.   13
  ARMOURED_VEH Armoured vehicles, generic.   14
  ARTILLERY_GENERIC     15
  BATTLE_TANKS     16
  C4I_SYSTEMS     17
  CIVILIAN_VEH     18
  HEAVY_EQUIP_TRANSPORT Heavy equipment transport trailers.   19
  INFANTRY_GENERIC     20
  LARGE_TRACK_UTILITY_VEH Large tracked utility vehicles > 4 999 kilogram weight load.   21
  LARGE_WHEEL_UTILITY_VEH Large wheeled utility vehicles > 4 999 kilogram weight load.   22
  MORTARS     23
  SELF_PROPELLED_ARTILLERY Self-propelled guns and howitzers.   24
  SMALL_TRACK_UTILITY_VEH Small tracked utility vehicles <= 4 999 kilogram weight load.   25
  SMALL_WHEEL_UTILITY_VEH Small tracked utility vehicles <= 4 999 kilogram weight load.   26
  SUPPORT_EQUIP Support vehicles or equipment, generic.   27
  TOWED_ARTILLERY Towed artillery, e.g., gun, anti-tank gun, or howitzer.   28
  TRAILERS Trailer, e.g., cargo, chemical decontaminant, fuel, generator, maintenance equipment, or water.   29
ATM_PRESSURE_CHANGE_QUALITY   The quality status of an atmospheric pressure change tendency.    
  GOOD The quality of the observation was acceptable.   11
  NO_CHECK No check on the quality of the observation was performed.   12
  SUSPECT The original observation may be in error.   13
  VALUE_ERR_REPLACE_GOOD Original value erroneous, replacement good.   14
  VALUE_ERR_REPLACE_SUSPECT Original value erroneous, replacement questionable.   15
  VALUE_ERROR Original value erroneous.   16
  VALUE_MISS_PROB_CORRUPT Original value missing, probably corrupted.   17
  VALUE_MISS_REPLACE_SUSPECT Original value missing, recomputed value suspect.   18
  VALUE_MISSING Original value missing.   19
ATM_PRESSURE_CHANGE_TND   The qualitative atmospheric pressure change (tendency) that occurred over a three-hour period.    
  CHANGE_TO_DECREASE Increasing or steady and then decreasing, or decreasing then faster decreasing, and pressure less than 3 hours ago.   11
  CHANGE_TO_INCREASE Decreasing or steady and then increasing, or increasing then faster increasing, and pressure greater than 3 hours ago.   12
  DECREASE_AND_PRESS_LESS Decreasing and pressure less than 3 hours ago.   13
  DECREASE_THEN_INCREASE Decreasing then increasing, and pressure at or under 3 hours ago.   14
  DECREASE_THEN_STEADY Decreasing then steady or slower decreasing, and pressure less than 3 hours ago.   15
  INCREASE_THEN_DECREASE Increasing then decreasing, and pressure at or above 3 hours ago.   16
  INCREASE_THEN_STEADY Increasing then steady or slower increasing, and pressure greater than 3 hours ago.   17
  INCREASING Increasing, and pressure greater than 3 hours ago.   18
  STEADY_AND_PRESS_EQUAL Steady and pressure equal to 3 hours ago.   19
ATM_PRESSURE_QUALITY   The quality status of an atmospheric pressure measurement.    
  GOOD The quality of the observation was acceptable.   11
  NO_CHECK No check on the quality of the observation was performed.   12
  SUSPECT The original observation may be in error.   13
  VALUE_ERR_REPLACE_GOOD Original value erroneous, replacement good.   14
  VALUE_ERR_REPLACE_SUSPECT Original value erroneous, replacement questionable.   15
  VALUE_ERROR Original value erroneous.   16
  VALUE_MISS_PROB_CORRUPT Original value missing, probably corrupted.   17
  VALUE_MISS_REPLACE_SUSPECT Original value missing, recomputed value suspect.   18
  VALUE_MISSING Original value missing.   19
ATS_ROUTE_LEVEL   The ATS Route Structure of which this route is a component.    
  BOTH_FL195 Both low and high level FL195.   11
  HIGH_FL195 High level FL195.   12
  LOW_FL195 Low level FL195.   13
  NIGHT_LOW Night, low flying.   14
ATS_USE_TYPE   The particular use of the designated ATS airspace.    
  ADVISORY_AD Advisory region, air defence.   11
  AERODROME_CZ Aerodrome control zone.   12
  AIR_DEFENSE_IDZ Air defence identification zone.   13
  AIRPORT_ADVISORY Airport advisory region.   14
  AIRPORT_RADAR_SERVICE Airport radar service region.   15
  AIRPORT_TRAFFIC Airport traffic region.   16
  ALERT Alert region.   17
  ALT_CHANGE Altimeter change boundary.   18
  AREA_CONTROL Area control centre.   19
  ARTCC Air route traffic control centre.   20
  ARTCC_SECTOR Air route traffic control centre sector or discrete.   21
  BERLIN_CZ Berlin control zone.   22
  BIRD_HAZARD Bird hazard sites.   23
  BUFFER_ZONE Buffer zone.   24
  CANADIAN_AD_IDZ Canadian air defence identification zone.   25
  CLASS_C_CZ Class C control zone.   26
  CONT_CONTROL Continental control region.   27
  CONTROL Control region.   28
  CONTROL_AIRSPACE Controlled airspace.   29
  CONTROL_FIRING Controlled, firing region.   30
  CONTROL_VFR Controlled, visual flight rules.   31
  CONTROL_ZONE Control zone.   32
  CONTROL_ZONE_NO_FW Control zone - no fixed wing special visual flight rules permitted.   33
  DANGER Danger region.   34
  DEFENSE Defence region.   35
  DEW Distant Early Warning identification zone.   36
  DEW_EAST Distant Early Warning East military identification zone.   37
  FLIGHT_INR Flight information region.   38
  FRENCH_PERIPHERAL_IDZ French peripheral identification zone.   39
  HELICOPTER_PROTECT Helicopter protection region.   40
  ICAO International Civil Aviation Organization.   41
  KOREA_LIMITED_IDZ Korea limited identification zone.   42
  LOW_FLY Low flying region.   43
  MIDCANADA_IDZ Mid-Canada identification zone.   44
  MILITARY_AERODROME_TZ Military aerodrome traffic zone.   45
  MILITARY_CLIMB_CORRIDOR Military climb corridor.   46
  MILITARY_COMMON_CONTROL Military common region control.   47
  MILITARY_FLYING Military flying zone.   48
  MILITARY_OPERATIONS Military operations zone.   49
  MILITARY_TERMINAL_CONTROL Military terminal control zone.   50
  MILITARY_UPPER_CONTROL Military upper control zone.   51
  MOUNTAINOUS Designated mountainous region.   52
  NON_FREE_FLYING No free-flying region.   53
  OCA_FAA Oceanic control region - US Federal Aviation Administration.   54
  OCA_NON_FAA Oceanic control region - non US Federal Aviation Administration.   55
  OPERATING Operating region.   56
  PARACHUTE_JUMP Parachute jump site.   57
  POSITIVE_CONTROL Positive control region.   58
  POSITIVE_CZ Positive control zone.   59
  PROHIBITED Prohibited region.   60
  RADAR Radar region.   61
  RADAR_SECTOR Radar region sector boundary.   62
  REFUELING     63
  REFUELING_OR_TRACK Refuelling or track region. May be further delineated specifically as EE REFUELING and TRACK.   64
  RESTRICTED Restricted region.   65
  SECURITY_IDZ Security identification zone.   66
  SPARSELY_SETTLED Sparsely settled region.   67
  SPECIAL_AIR_TRAFFIC Special air traffic rules region.   68
  SPECIAL_OPERATIONS Special operations region.   69
  SPECIAL_RULES_ZONE Special rules zone.   72
  SPECIAL_USE_AIRSPACE Special use airspace exclusions.   73
  SUB_FLIGHT_INR Sub-flight information region.   74
  TEMP_RESERVE Temporary reserved airspace.   75
  TERMINAL_CONTROL Terminal control region.   76
  TERMINAL_RADAR_SERVICE Terminal radar service region.   77
  TRACK     78
  TRAFFIC_INZ Traffic information zone.   79
  TRANSITION Transition region; for chart use only.   80
  UNCONTROLLED Uncontrolled airspace.   81
  UPPER_ADVISORY Upper advisory region.   82
  UPPER_AIRSPACE Upper airspace centres, operational air traffic.   83
  UPPER_CONTROL Upper control region.   84
  UPPER_FLIGHT_INR Upper flight information region.   85
  WARNING_AREA Warning region.   86
  ZONE_OF_INTERIOR Zone of interior.   87
AVAILABLE_FACILITIES_TYPE   The type of facilities available at or in the near vicinity.    
  BOAT_HOIST Equipment used to lift a small watercraft.   11
  BOAT_RAMP Facility for unloading and launching boats into a water body, and for landing and loading boats from a water body onto a vehicle for ground transport.   12
  BOAT_YARD Facilities for the repair or upkeep of small watercraft.   13
  BOTTLE_GAS Provides bottled or� liquefied petroleum gas.   14
  CAMPGROUND A site reserved for the set up and use of tents or vehicular camping facilities.   15
  CHANDLER Facility where goods are traded, especially supplies for ships.   16
  DESALINATION Facilities for the removal of salts and other minerals from seawater.   17
  DRINKING_WATER Water safe for human consumption; potable or drinking water.   18
  ELECTRICITY Electric power.   19
  EMERGENCY_TELEPHONE Telecommunications equipment for notifying emergency personnel.   20
  FUEL_STATION Facility for the procurement of fuel.   22
  HELIPAD Facility for vertical takeoff and landing of aircraft.   23
  HOTEL_ACCOMMODATION Availability of overnight sleeping facilities.   24
  LAUNDERETTE Facility for laundering clothes.   25
  MECHANICS_WORKSHOP Facility for use by personnel to build or repair machines.   26
  NO_TICKET_SALES No facilities for ticket sales.   27
  NONE_AVAILABLE No facilities are known to be available at this location.   28
  PARKING_FOR_BOATS Parking for boats and trailers.   29
  PARKING_LOT Facilities in the vicinity include an site used for the parking of motor vehicles.   30
  PHARMACY Facilities include a store where medicines (including those ordered by medical professionals) and personal hygiene products may be purchased.   31
  PHYSICIAN Facilities include a medical doctor, esp. one who has general skill and is not a surgeon.   32
  PICNIC_AREA Facilities include an open-air tract of land reserved for eating.   33
  POST_BOX Facilities include a point for pickup and delivery of mail.   34
  PROVISIONS Facilities include a store that sells supplies of food and other necessary things.   35
  PUBLIC_TELEPHONE Facilities include a telephone that may be used by the general public for charge.   36
  REFUSE_BIN Facilities include a location for the deposit, and subsequent collection, of small amounts of waste and garbage.   37
  RESTAURANT Facilities include a place where meals are prepared and served to customers.   38
  RV_PARK Recreational vehicle park.   39
  SAILMAKER Facilities include an activity where sails can be made or repaired.   40
  SCRUBBING_BERTH Facilities include a berth where vessels may be cleaned.   41
  SECURITY The presence of personnel or methods to ensure access is provided only to authorized persons.   42
  SEWAGE_PUMP_OUT Sewage pump-out station.   43
  SHOWERS Facilities include bathing device which release water through shower heads and which a person stands under in order to wash their body.   44
  TICKET_SALES Facilities include a location where tickets may be purchased.   45
  TOILETS Facilities include those associated with most forms of personal hygiene.   46
  VISITORS_BERTH Facilities include space assigned to visiting ships at a wharf or at anchor, on a temporary basis.   47
  VISITORS_MOORING Facilities include a place designed to support the process of securing or tying down visiting vessels or aircraft, on a temporary basis.   48
  WATER_POLICE Facilities include individuals performing law enforcement, especially those laws pertaining to water regions, including water traffic and use.   49
  YACHT_CLUB Facilities include an organization and holdings dedicated top the use of small, fast sailing ships, historically of Dutch origin, adopted for use as small naval vessels and (especially) as a pleasure craft.   50
AVERAGE_WATER_SPEED_RANGE   A range indicating the water speed, estimated within delineation of an object (e.g., aqueduct, stream, river outflow region, or drainage canal), exclusive of high water due to runoff or low water due to drought.    
  FAST > 1,5 metres per second.   11
  SLOW <= 1,5 metres per second.   12
AVERAGING_PERIOD   The period of time over which a measurement has been averaged.    
  1_SEC One second.   11
  2_SEC Two seconds.   12
  5_SEC Five seconds.   13
  10_SEC Ten seconds.   14
  15_SEC Fifteen seconds.   15
  30_SEC Thirty seconds.   16
  60_SEC One minute (60 seconds).   17
  120_SEC Two minutes (120 seconds).   18
  300_SEC Five minutes (300 seconds).   19
  600_SEC Ten minutes (600 seconds).   20
  900_SEC Fifteen minutes (900 seconds).   21
  1800_SEC Thirty minutes (1 800 seconds).   22
  3600_SEC One hour (3 600 seconds).   23
  7200_SEC Two hours (7 200 seconds).   24
  10800_SEC Three hours (10 800 seconds).   25
  14400_SEC Four hours (14 400 seconds).   26
  21600_SEC Six hours (21 600 seconds).   27
  28800_SEC Eight hours (28 800 seconds).   28
  43200_SEC Twelve hours (43 200 seconds).   29
  86400_SEC Twenty-four hours (86 400 seconds).   30

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