Table 6.44 — EEs for EAs with labels beginning with I
Attribute label Enumerant label Concept definition Figure(s) Code
ICAO_AIRSPACE_CLASS   The class of an ICAO <AIRSPACE>.    
  A IFR flights only are permitted, all flights are subject to air traffic control service and are separated from each other; A.   1
  B IFR and VFR flights are permitted and all flights are subject to air traffic control service and IFR flights are separated from each other; B.   2
  C Class <<<B>>> where IFR flights are also separated from VFR flights by air traffic control service; C. VFR receive traffic information about other VFR flights.   3
  D Class <<<B>>> where IFR flights also receive traffic information about VFR flights by air traffic control service; D. VFR flights receive traffic information about all other flights.   4
  E IFR and VFR flights are permitted and IFR flights are subject to air traffic control service and are separated from other IFR flights; E. All flights receive traffic information as far as is practical.   5
  F IFR and VFR flights are permitted and all participating IFR flights receive an air traffic advisory service and all flights receive flight information service if requested; F.   6
  G IFR and VFR flights are permitted and receive flight information service if requested; G.   7
ICING_TYPE   The type of any deposit or coating of <ICE> on an <OBJECT> caused by the impingement and freezing of liquid (usually supercooled) hydrometeors; icing type.    
  CLEAR_ICE Smooth compact <RIME>, usually transparent, fairly amorphous, with a ragged <SURFACE>, and morphologically resembling <ICE_GLAZE>; clear ice.   1
  HARD_RIME Opaque, granular masses of <RIME> deposited chiefly on vertical <SURFACE>s by a dense supercooled <FOG>; hard rime. Hard rime is more compact and amorphous than <<<SOFT_RIME>>> and may build out into the <WIND> as glazed cones or feathers of <ICE>.   2
  HOAR_FROST <HOAR_FROST>.   3
  ICE_GLAZE <ICE_GLAZE>.   4
  RIME <RIME>.   5
  SOFT_RIME A white, opaque coating of fine <RIME> deposited chiefly on vertical <SURFACE>s, especially on points and edges of <OBJECT>s, generally in supercooled <FOG>; soft rime.   6
INLAND_HYDROLOGIC_PERSISTENCE   The persistence of an inland <HYDROLOGIC_OBJECT>.    
  EPHEMERAL Has flowing water only during, and for a short duration after, precipitation events in a typical year; ephemeral [WRC, "ephemeral stream"]. The water table is located below the bed year-round. Runoff from rainfall is the primary source of <WATER> for the <HYDROLOGIC_OBJECT>, while groundwater is not a source of <WATER>.   1
  NON_PERENNIAL Not <<<PERENNIAL>>>; non-perennial.   2
  PERENNIAL Has flowing <WATER> year-round during a typical year; perennial [WRC, "perennial stream"]. The water table is located above the bed for most of the year. Groundwater is the primary source of <WATER> for the <HYDROLOGIC_OBJECT>, while runoff from rainfall is a supplemental source of <WATER>.   3
INSTALLATION_BUOY_TYPE   The type of an installation <BUOY>.    
  CATENARY_ANCHOR Incorporates a large <BUOY> that remains on the <SURFACE> at all times and is moored by 4 or more anchors; catenary anchor. Mooring hawsers and cargo hoses lead from a turntable on top of the <BUOY> so that the <BUOY> does not turn as the <VESSEL> swings to wind and stream.   1
  SINGLE A mooring <STRUCTURE> used by tanker <VESSEL>s to load and unload in port approaches or in offshore oil and gas fields; single. The size of the <STRUCTURE> can vary between a large mooring <BUOY> and a manned floating <STRUCTURE>.   2
INTEREST_TYPE   The reason an <OBJECT> is of interest; interest type.    
  FAMOUS_RESIDENCE A famous place of residence.   1
  HISTORIC_BATTLEFIELD An historic battlefield.   2
  HISTORIC_MONUMENT An historic monument.   3
INTERIOR_WALL_CONSTRUCTION-
_TYPE
  The type of <MATERIAL> and/or techniques used to construct an <INTERIOR_WALL>; interior wall construction type.    
  CONCRETE Concrete.   1
  GYPSUM_ON_METAL Gypsum wallboard secured to metal <WALL_STUD>s.   2
  GYPSUM_ON_WOOD Gypsum wallboard secured to wood <WALL_STUD>s.   3
  HOLLOW_CONCRETE_BLOCK Hollow concrete blocks cemented with mortar.   4
  HOLLOW_FIRED_CLAY_BLOCK Hollow fired clay blocks cemented with mortar.   5
  LATH_PLASTER Lath and plaster on wood <WALL_STUD>s.   6
  MASONRY Masonry.   7
  REINFORCED_CONCRETE Reinforced concrete.   8
INTERIOR_WINDOW_COVERING   The type of the internal covering of a <WINDOW>.    
  CURTAIN Curtain.   1
IRRIGATION_METHOD   The method used to supply crops with <WATER>; irrigation method.    
  DITCH Utilizes a <SYSTEM> of <IRRIGATION_DITCH>s for the distribution of <WATER> for agricultural use.   1
  SPRINKLER Utilizes an aerial mist or spray rather than applying <WATER> directly on the <SURFACE> of the <SOIL>; sprinkler.   2
ISLAMIC_DENOMINATIONAL_FAMILY   The designation of a <NON_EMPTY_SET> of closely related Islamic religious denominations, often ones which were at one time part of a single movement but are now separate religious denominations; Islamic denominational family.    
  AHMADIYA Messianic movement derived from Shia Islam, following 1889 founder Ghulam Ahmad; Ahmadiya.   1
  ALAWITE Followers of Alawiya, a sect of Shia Islam in Latakia province Syria, Lebanon, and Celicia, Turkey; Alawite.   2
  BADAWIYA A major order of Sufi Islam in Egypt; Badawiya.   3
  HANAFITE Followers of Hanafiya, the most liberal of the four schools of Sunni Islamic law, and by far the most widespread; Hanafite.   4
  HANBALITE Followers of Hanabila, the most rigid of the four schools of Sunni Islamic law; Hanbalite. This sect of Islam is located mainly in Central Arabia.   5
  ISMAILI Followers of Ishaliya, the second largest sect of Shia Islam; Ismaili. This sect of Islam is also known as the Seveners.   6
  ITHNA_ASHARI Followers of Ithna-Ashariya, the largest sect of Shia Islam; Ashari, Ithna-Ashari. This sect of Islam is also known as the Ashari or the Twelvers.   7
  MADARIYA A major order of Sufi Islam in Northern India and Nepal; Madariya.   8
  MALAKITE Followers of Malikiya, one of the four schools of Sunni Islamic law; Malakite.   9
  NATION_OF_ISLAM Followers of Elijah Mohammed; Nation of Islam. This sect of Islam, which is also known as the Black Muslims, is found in the West.   10
  QADIRIYA The oldest order of Sufi Islam, widespread in over 50 countries from Senegal to Malaysia; Qadiriya.   11
  SHAFFITE Followers of Shafiiya, one of the four schools of Sunni Islamic law; Shaffite.   12
  SHIA Shia.   13
  SUFI Members of one of approximately 70 orders of Sunni Islam believing in mysticism and asceticism; Sufi.   14
  SUNNI Sunni.   15
  WAHABI Wahabi.   16
  ZAYDI A sect of Islam in Yemen that constitutes of one of the four major sects of Shia Islam; Zaydi. This sect of Islam is also known as the Fivers.   17