ISO/IEC 18025:2013(E) Table 6.36 — EEs for EAs with labels beginning with A

Table 6.36 — EEs for EAs with labels beginning with A
Attribute label	Enumerant label	Concept definition	Figure(s)	Code
ACCESS_DIRECTION_TYPE		The type of access direction of an <OBJECT> in reference to allowable traffic flow.
	END	End.		1
	ENTRY	Entry.		2
	EXIT	Exit.		3
	START	Start.		4
ACCESSIBILITY_STATUS		The type of accessibility of an <OBJECT>; accessibility status.
	CLOSED	Access is officially prohibited; closed. The <OBJECT> may be covered and/or blocked by a <BARRIER>.		1
	CLOSED_LOCKED	Access is officially prohibited and is restricted by a <BARRIER>, requiring special means to pass (e.g., a key); closed locked.		2
	LIMITED	A limitation on access, but not function, has been imposed; limited. The limitation is not necessarily enforced by a <BARRIER>.		3
	LOCKED	Access is prevented by a <BARRIER>, requiring special means to pass (e.g., a key); locked.		4
	OPEN	Access is officially allowed; open. The <OBJECT> may be covered and/or blocked by a <BARRIER> that is temporarily passable.		5
	OPEN_LOCKED	Access is officially allowed, although restricted by a <BARRIER> that is currently open, requiring special means to close and prevent future passage (e.g., a key); open locked.		6
	RESTRICTED	Access is officially allowed, although a limitation on function has been imposed; restricted. The limitation is not necessarily enforced by a <BARRIER>.		7
ACCUMULATION_PERIOD_CATEGORY		The category of an <<ACCUMULATION_PERIOD>>.
	ONE_SECOND	One second.		1
	TWO_SECONDS	Two seconds.		2
	FIVE_SECONDS	Five seconds.		3
	TEN_SECONDS	Ten seconds.		4
	FIFTEEN_SECONDS	Fifteen seconds.		5
	THIRTY_SECONDS	Thirty seconds.		6
	ONE_MINUTE	One minute.		7
	TWO_MINUTES	Two minutes.		8
	FIVE_MINUTES	Five minutes.		9
	TEN_MINUTES	Ten minutes.		10
	FIFTEEN_MINUTES	Fifteen minutes.		11
	THIRTY_MINUTES	Thirty minutes.		12
	ONE_HOUR	One hour.		13
	TWO_HOURS	Two hours.		14
	THREE_HOURS	Three hours.		15
	FOUR_HOURS	Four hours.		16
	SIX_HOURS	Six hours.		17
	EIGHT_HOURS	Eight hours.		18
	TWELVE_HOURS	Twelve hours.		19
	TWENTY_FOUR_HOURS	Twenty-four hours.		20
ACOUSTIC_CENTRE_FREQUENCY_BAND		The electro-acoustic one-third-octave band centre <<FREQUENCY>> (approximate).
	BAND_1_HZ	1 hertz.		1
	BAND_1r25_HZ	1,25 hertz.		2
	BAND_1r6_HZ	1,6 hertz.		3
	BAND_2_HZ	2 hertz.		4
	BAND_2r5_HZ	2,5 hertz.		5
	BAND_3r15_HZ	3,15 hertz.		6
	BAND_4_HZ	4 hertz.		7
	BAND_5_HZ	5 hertz.		8
	BAND_6r3_HZ	6,3 hertz.		9
	BAND_8_HZ	8 hertz.		10
	BAND_10_HZ	10 hertz.		11
	BAND_12r5_HZ	12,5 hertz.		12
	BAND_16_HZ	16 hertz.		13
	BAND_20_HZ	20 hertz.		14
	BAND_25_HZ	25 hertz.		15
	BAND_31r5_HZ	31,5 hertz.		16
	BAND_40_HZ	40 hertz.		17
	BAND_50_HZ	50 hertz.		18
	BAND_63_HZ	63 hertz.		19
	BAND_80_HZ	80 hertz.		20
	BAND_100_HZ	100 hertz.		21
	BAND_125_HZ	125 hertz.		22
	BAND_160_HZ	160 hertz.		23
	BAND_200_HZ	200 hertz.		24
	BAND_250_HZ	250 hertz.		25
	BAND_315_HZ	315 hertz.		26
	BAND_400_HZ	400 hertz.		27
	BAND_500_HZ	500 hertz.		28
	BAND_630_HZ	630 hertz.		29
	BAND_800_HZ	800 hertz.		30
	BAND_1000_HZ	1 000 hertz.		31
	BAND_1250_HZ	1 250 hertz.		32
	BAND_1600_HZ	1 600 hertz.		33
	BAND_2000_HZ	2 000 hertz.		34
	BAND_2500_HZ	2 500 hertz.		35
	BAND_3150_HZ	3 150 hertz.		36
	BAND_4000_HZ	4 000 hertz.		37
	BAND_5000_HZ	5 000 hertz.		38
	BAND_6300_HZ	6 300 hertz.		39
	BAND_8000_HZ	8 000 hertz.		40
	BAND_10_KHZ	10 kilohertz.		41
	BAND_12r5_KHZ	12,5 kilohertz.		42
	BAND_16_KHZ	16 kilohertz.		43
	BAND_20_KHZ	20 kilohertz.		44
	BAND_25_KHZ	25 kilohertz.		45
	BAND_31r5_KHZ	31,5 kilohertz.		46
	BAND_40_KHZ	40 kilohertz.		47
	BAND_50_KHZ	50 kilohertz.		48
	BAND_63_KHZ	63 kilohertz.		49
	BAND_80_KHZ	80 kilohertz.		50
	BAND_100_KHZ	100 kilohertz.		51
	BAND_125_KHZ	125 kilohertz.		52
	BAND_160_KHZ	160 kilohertz.		53
	BAND_200_KHZ	200 kilohertz.		54
	BAND_250_KHZ	250 kilohertz.		55
	BAND_315_KHZ	315 kilohertz.		56
	BAND_400_KHZ	400 kilohertz.		57
	BAND_500_KHZ	500 kilohertz.		58
	BAND_630_KHZ	630 kilohertz.		59
	BAND_800_KHZ	800 kilohertz.		60
ACOUSTIC_REFLECTION_TYPE		The type of acoustic reflection from a <WATERBODY_FLOOR>.
	FROM_WTRBODY_FLOOR	Most of the reflected sound energy is reflected at the <BOUNDARY> between the <WATERBODY_FLOOR> and the <WATER>; from waterbody floor.		1
	FROM_BELOW_WTRBODY_FLOOR	The sound energy penetrates a superficial layer of the <WATERBODY_FLOOR> (for example: <SEDIMENT>), so that the sound energy is reflected from below the <WATERBODY_FLOOR>.		2
AERIAL_FUNCTION		The function of an <AERIAL>.
	AIR_TRAFFIC_CONTROL	Air traffic control.		1
	MARINE_RADIO_SERVICE	Transmits radio services useful to marine navigation.		2
	PUBLIC_SAFETY	Transmits radio services important to public safety.		3
	RADAR	Radar.		4
	RADIO_BROADCAST	Radio broadcast.		5
	SATELLITE_UPLINK	Satellite uplink.		6
	TELEVISION_BROADCAST	Television broadcast.		7
AERIAL_TYPE		The structural type of an <AERIAL>.
	DIPOLE	Composed of two straight rods of equal <<LENGTH>> (corresponding to 1/4 the <<WAVELENGTH>> of the electromagnetic wave being transmitted or received), mounted in line with one another, and having an electrical connection to the centre of the <AERIAL>; dipole [SOED, "dipole", 2].		1
	HORN	An open-ended waveguide, of increasing cross-sectional <<AREA>>, which radiates directly in a desired <DIRECTION> or feeds a reflector that forms a desired beam; horn [ATIS, "horn"].		3
	PARABOLIC	An <AERIAL> consisting of a parabolic reflector and a radiating or receiving element at or near its focus [ATIS, "parabolic antenna"].		4
	PHASED_ARRAY	A group of <AERIAL>s in which the relative phases of the respective signals feeding the <AERIAL>s are varied in such a way that the effective radiation pattern of the array is reinforced in a desired <DIRECTION> and suppressed in undesired <DIRECTION>s; phased array [ATIS, "phased array"].		2
	WHIP	A flexible rod <AERIAL> supported on a base insulator; whip [ATIS, "whip antenna"]. A whip <AERIAL> is usually between 1/10 and 5/8 wavelength long.		5
	YAGI	Composed of a number of short rods mounted transversely on an insulating support; yagi [SOED, "yagi"]. A yagi <AERIAL> is highly directional, receiving or transmitting within a narrow band of <<FREQUENCY>>s.		6
AERODROME_TYPE		The type of an <AERODROME>.
	AERODROME	<AERODROME>.		1
	AIRFIELD	<AIRFIELD>.		2
	AIRPORT	<AIRPORT>.		3
	DAFIF_A	An active civil <AERODROME> controlled and operated by civil authorities primarily for use by civil <AIRCRAFT>, although military may have landing privileges and/or contract rights; DAFIF A. Minimum facilities are available that include: <CONTROL_TOWER> (or some similar control <SYSTEM>, such as a FSS that issues clearances and advisories when there is no <CONTROL_TOWER> or the <CONTROL_TOWER> is not in operation), <AERODROME_LIGHTING> (for example: flare pots), POL, and <AIRCRAFT>s for organizational maintenance, or better.		4
	DAFIF_B	An active <AERODROME> jointly controlled, used, and/or operated by both civil and military agencies; DAFIF B. The military agencies are permanent operational flight line type tenants with, or without, <AIRCRAFT> stationed on the <AERODROME>. Facilities are the same as for civil (<<<DAFIF_A>>> type) <AERODROME>s.		5
	DAFIF_C	An active military <AERODROME> controlled and operated by military authorities primarily for use by military <AIRCRAFT>, although civil <AIRCRAFT> may have landing privileges and/or contract rights; DAFIF C. Facilities are the same as for civil (<<<DAFIF_A>>> type) <AERODROME>s.		6
	DAFIF_D	An active <AERODROME> having permanent surface <RUNWAY>s with less than the minimum facilities required for civil (<<<DAFIF_A>>> type) <AERODROME>s; DAFIF D. For the United States, the FAA term "inactive" is incorporated into this category.		7
	EMERGENCY	Designated for the emergency take-off and landing of <AIRCRAFT>.		8
	GENERAL_AVIATION	Designated for light and/or general aviation <AIRCRAFT> operations only.		9
	GLIDER	Designated for the take-off and landing of glider <AIRCRAFT>.		10
	HANG_GLIDER	Designated for the landing of hang glider <AIRCRAFT>.		11
	HELICOPTER	Designated for the takeoff and landing of <HELICOPTER>s.		12
	HELIPORT	<HELIPORT>.		13
	HELIPORT_AT_HOSPITAL	A <<<HELIPORT>>> located at a <HOSPITAL_BUILDING>.		14
	MAJOR_AERODROME	A major (controlled) <AERODROME> that has an operating <CONTROL_TOWER>. Air traffic control is responsible for providing for the safe, orderly, and expeditious flow of air traffic at <AIRPORT>s 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.		15
	MICROLIGHT	Designated for microlight or ultralight <AIRCRAFT>.		16
	MINOR_AERODROME	A minor (uncontrolled) <AERODROME> that 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.		17
	PARASCENDING	Designated for parascending or parasailing <AIRCRAFT>.		18
	SEAPLANE_BASE	<SEAPLANE_BASE>.		19
	UNDEFINED_LANDING	Undefined landing <SITE>.		20
	WINCH_LAUNCHED_HANG_GLIDER	Designated for the winch-launching of hang glider <AIRCRAFT>.		21
AERONAUTICAL_APPROACH_TYPE		The type of an aeronautical approach.
	FINAL_FIX	Final fix.		1
	INITIAL_FIX	Initial fix.		2
	NON_PRECISION_INSTRUMENT	Non-precision instrument.		3
	PRECISION_INSTRUMENT	Precision instrument.		4
	STOL	STOL.		5
	VISUAL	Visual.		6
AERONAUTICAL_FUNCTION		The function of an aeronautical <OBJECT>.
	AERODROME_TERMINAL	<AERODROME_TERMINAL>.		1
	AID_TO_NAVIGATION_CHANGEOVER	<AID_TO_NAVIGATION> identifying a changeover <LOCATION>.		2
	ALTIMETER_CHANGE	Altimeter change.		3
	DECOY	Decoy.		4
	FEEDER	Feeder.		5
	MILEAGE_BREAK_DOWN	Mileage break down.		6
	RADAR	Radar.		7
	SEAPLANE_RUN	<SEAPLANE_RUN>.		8
	TERMINUS	Terminus.		9
	TERMINUS_OR_TERMINAL	<<<TERMINUS>>> and/or <<<AERODROME_TERMINAL>>>.		10
	TRANSACTION	Transaction.		11
	UNIDENTIFIED_AIRSTRIP	Unidentified <AIRSTRIP>.		12
AERONAUTICAL_LIGHT_TYPE		The type of <LIGHTING> or <SYSTEM> of <LIGHTING> that supports aeronautical navigation; aeronautical light type.
	AERODROME_TERMINAL	<LIGHT>s associated with an <AERODROME_TERMINAL>.		1
	AEROMARINE	A marine-type <LIGHT> for which part of the beam is deflected to an angle of 10 to 15 arc degrees above the horizon to facilitate use by <AIRCRAFT>; aeromarine.		2
	ALSF_I	Approach <LIGHTING> with sequential flashing - type I.		3
	ALSF_II	Approach <LIGHTING> with sequential flashing - type II.		4
	ALTERNATE_CENTRE_LINE	Alternate centre-line and bar approach <LIGHT>s.		5
	APAP_ALIGNMENT	An alignment of elements system consisting of a <SET> of three painted plywood panels (called approach path alignment panels: APAP) that are used as a visual glideslope indicator and is lighted for night use.		6
	APRON_FLOOD	Floodlight associated with an <APRON>.		7
	ARTICULATED	Articulated <LIGHT>.		8
	AUXILIARY	Auxiliary <LIGHT>.		9
	BEACON_UNSPECIFIED	A <BEACON> of unspecified type.		10
	BLINKING_LIGHT	A blinking <LIGHT> displayed as a visual <AID_TO_NAVIGATION>.		11
	BOUNDARY	<LIGHTING> associated with a <BOUNDARY>.		12
	CALVERT	The standard <SYSTEM> of approach <LIGHTING> for Australia; Calvert.		13
	CENTRE_AND_DOUBLE_ROW	Centre and double row <LIGHT>s.		14
	CENTRE_LINE_2_CROSSBAR	Centre-line, 2 crossbars approach <LIGHT>s.		15
	CENTRE_LINE_AND_BAR	Centre-line and bar <LIGHT>s.		16
	CENTRE_LINE_HIGH_INTENSITY	Centre-line, high-intensity approach <LIGHT>s.		17
	CENTRE_ROW	Centre row <LIGHT>s.		18
	CENTRE_ROW_1_HI_INTENSITY	Centre row, IFR instrument landing system category 1, high intensity <LIGHT>s.		19
	CENTRE_ROW_2_HI_INTENSITY	Centre row, IFR instrument landing system category 2, high intensity <LIGHT>s.		20
	CONSTANT_BEAM	A signal <LIGHT> that shows continuously in all <DIRECTION>s with constant luminous intensity and colour; constant beam.		21
	CROSS	Cross <LIGHT>.		22
	FISHING	Fishing <LIGHT>s.		23
	FLARES	Flares.		24
	FOG_DETECTOR	A <LIGHT> used to automatically determine conditions of visibility on a <RUNWAY>; fog detector.		25
	FORMER_NATO_STANDARD	Former <<<NATO_STANDARD>>>.		26
	HARBOUR	Navigational <LIGHTING> associated with a <HARBOUR>.		27
	HIGH_INTENSITY_RUNWAY	High intensity <LIGHT>s on a <RUNWAY>.		28
	HONG_KONG_CURVE	The <SYSTEM> of approach <LIGHTING> for Kai Tak Airport in Hong Kong; Hong Kong curve.		29
	HORIZONTAL	Horizontal <LIGHT>s.		30
	IDENTIFICATION_BEACON	Identification <BEACON>.		31
	LANDING_DIRECTION	<LIGHT> indicating landing <DIRECTION>.		32
	LEFT_ROW_HIGH_INTENSITY	Row of high intensity <LIGHT>s on the left side on a <RUNWAY>.		33
	LEFT_SINGLE_ROW	Single row of <LIGHT>s on the left side on a <RUNWAY>.		34
	LOW_COST_VASI	Low cost <<<VASI>>>.		35
	LOW_INTENSITY_RUNWAY	Low intensity <LIGHT>s on a <RUNWAY>.		36
	MAJOR	Major.		37
	MALSF	MALSF.		38
	MALSR	MALSR.		39
	MEDIUM_INTENSITY_RUNWAY	Medium intensity <LIGHT>s on a <RUNWAY>.		40
	MINOR	Minor <LIGHT>.		41
	NARROW_MULTI_CROSS	Narrow multi-cross <LIGHT>.		42
	NATO_STANDARD	NATO standard.		43
	NEON_LADDER	Neon ladder <LIGHT>.		44
	NONE_AVAILABLE	None available.		45
	OBSTRUCTION	Obstruction <LIGHT>.		46
	OBSTRUCTION_LIGHTING	Obstruction <LIGHTING>.		47
	OCCASIONAL	Occasional <LIGHT>.		48
	ODALS	Consists of seven omnidirectional flashing <LIGHT>s located in the approach area of a nonprecision <RUNWAY>; ODALS. Five <LIGHT>s are located on the centre-line of the <RUNWAY> extended with the first <LIGHT> located 91,44 metres (300 feet) from the threshold of the <RUNWAY> and extending at equal intervals up to 457,2 metres (1 500 feet) from the threshold. The other two <LIGHT>s are located, one on each side of the threshold of the <RUNWAY>, at a lateral distance of 12,192 metres (40 feet) from the edge of the <RUNWAY>, or 22,86 metres (75 feet) from the edge when installed on a <RUNWAY> equipped with a <<<VASI>>> [F7110.65, "AIRPORT LIGHTING", a.9].		49
	OPTICAL_LANDING_SYSTEM	Optical landing system.		50
	OTHER_AERODROME_LIGHTING	Other aerodrome <LIGHTING>.		51
	OTHER_APPROACH_LIGHTING	Other approach <LIGHTING>.		52
	OVERRUN_CENTRE_LINE	<LIGHTING> associated with the <CENTRE_LINE> of a <RUNWAY_OVERRUN>.		53
	PORTABLE_APPROACH	Portable approach <LIGHT>.		54
	PORTABLE_RUNWAY	Portable <LIGHT>s on a <RUNWAY>.		55
	PRECISION_APPROACH	Precision approach path indicator <LIGHT>.		56
	PRIMARY	Primary <LIGHT>.		57
	PRIVATE	Private <LIGHT>.		58
	RAIL	RAIL.		59
	RANGE	Range <LIGHT>.		60
	ROTATING_BEACON	Rotating <BEACON>.		61
	RUNWAY	<LIGHTING> associated with a <RUNWAY>.		62
	RUNWAY_CENTRE_LINE	<LIGHTING> associated with the centre-line of a <RUNWAY>.		63
	RUNWAY_EDGE	<LIGHTING> associated with the edge of a <RUNWAY>.		64
	RUNWAY_END	Identification <LIGHTING> associated with the end of a <RUNWAY>.		65
	RUNWAY_FLOOD	Flood <LIGHTING> associated with a <RUNWAY>.		66
	RUNWAY_REGION	<LIGHT>s on both the <RUNWAY> and the <<<RUNWAY_EDGE>>>; runway region.		67
	SEASONAL	Seasonal <LIGHT>.		68
	SECONDARY	Secondary <LIGHT>.		69
	SEQUENCED_STROBE	Sequenced strobe <LIGHT>.		70
	SINGAPORE_CENTRE_LINE	The <SYSTEM> of approach <LIGHTING> for Changi Airport in Singapore; Singapore centre line.		71
	SINGLE_ROW_CENTRE_LINE	Single row centre-line <LIGHT>s.		72
	SSALF	SSALF.		73
	SSALR	Simplified short approach <LIGHTING> with runway alignment indicator <LIGHT>s.		74
	STROBE	A <LIGHT> with an extremely short duration flash; strobe.		75
	TAXIWAY_LIGHTING	<LIGHTING> associated with a <TAXIWAY>.		76
	THRESHOLD	Threshold <LIGHT>.		77
	TIDAL	Tidal <LIGHT>.		78
	TOUCHDOWN_ZONE_LIGHTING	Touchdown zone <LIGHTING>.		79
	TVASI_T_BAR	T-bar <<<VASI>>>; TVASI.		80
	TWO_PARALLEL_ROW	Two parallel row <LIGHT>s.		81
	US_AIR_FORCE_OVERRUN	US Air Force <RUNWAY_OVERRUN>.		82
	US_NAVY_PARALLEL_ROW_AND_X	US Navy parallel row and crossbar.		83
	VARIABLE_INTENSITY_RUNWAY	Variable intensity <RUNWAY>.		84
	VASI	VASI.		85
	VASI_2_BAR	Two-bar <<<VASI>>>.		86
	VASI_3_BAR	Three-bar <<<VASI>>>.		87
	VASI_PULSATING	Pulsating <<<VASI>>>.		88
	VASI_WITH_INDICATOR	<<<VASI>>> with indicator for threshold crossing height.		89
	VERTICAL	Vertical <LIGHT>s.		90
	WIND_INDICATOR	<LIGHTING> associated with a <WIND_INDICATOR>.		91
AERONAUTICAL_POINT_FUNCTION		The function of an aeronautical point <OBJECT> related to air traffic control.
	AERODROME_REFERENCE	Reference point at an <AERODROME>.		1
	ARCP_CONTROL	ARCP.		2
	ARIP_INITIAL	ARIP.		3
	COMPULSORY_REPORT	Compulsory report.		4
	MISSED_APPROACH	Missed approach.		5
	NAVIGATION_CHECK	Navigation check.		6
	NON_COMPULSORY_REPORT	Non-compulsory report.		7
	VISUAL_DESCENT	Visual descent.		8
AERONAUTICAL_ROUTE_TYPE		The type of an <AIR_TRANSPORTATION_ROUTE>; aeronautical route type.
	HIGH_ALTITUDE_ENROUTE	High altitude enroute.		1
	LOW_ALTITUDE_ENROUTE	Low altitude enroute.		2
	LOW_HIGH_ALTITUDE_ENROUTE	<<<LOW_ALTITUDE_ENROUTE>>> and <<<HIGH_ALTITUDE_ENROUTE>>>.		3
AEROSOL_PARTICLE_TYPE		The type of <PARTICLE> in an <AEROSOL>.
	DUST	<DUST>.		1
	HAZE	Fine <DUST>, <<<SALT_HAZE>>>, <<<MIST>>>, <SMOKE>, or other solid <PARTICLE>s that are invisible to the naked eye but which diminish horizontal visibility and give the <ATMOSPHERE> an opalescent appearance and render distant <OBJECT>s indistinct and subdued in colour; haze.		2
	MARINE	<AEROSOL>s that are generated in the marine environment by processes such as breaking <WATER_WAVE>s, and <<<OCEAN_SPRAY>>>.		3
	MIST	A <LOCALIZED_ATM_SUSPENSION> consisting of a visible aggregate of microscopic water droplets or wet hygroscopic <PARTICLE>s (of <<OUTSIDE_DIAMETER>> not less than 0,5 millimetre (0,02 inches)), reducing the horizontal <<VISIBILITY_DISTANCE>> at the <PLANETARY_SURFACE> to not less than 1 kilometre (5/8 miles); mist. The visibility reduction is less than for <FOG>.		4
	NITRATES	Nitrates derived from NO_x.		5
	NO_AEROSOL	No <AEROSOL>s are present.		6
	OCEAN_SPRAY	A stream of ocean <WATER> broken up into minute <PARTICLE>s and propelled into the <ATMOSPHERE>; ocean spray.		7
	SALT_HAZE	<PARTICLE>s of salt, suspended in the <ATMOSPHERE> due to the evaporation of <<<OCEAN_SPRAY>>>; salt haze.		8
	SAND	<PARTICLE>s of <SAND> suspended in the <ATMOSPHERE>.		9
	SMOKE	<SMOKE>.		10
	SOOT	Soot.		11
	SULFATES	Sulfates derived from either biogenic gases or SO₂.		12
	VOLCANIC_ASH	Fine or very fine pyroclastic <PARTICLE>s less than 4 millimetres in diameter that are blown out from an explosion of a <VOLCANO>; volcanic ash.		13
	VOLCANIC_DUST	<PARTICLE>s of <DUST> produced by an eruption of a <VOLCANO>; volcanic dust.		14
AID_TO_NAVIGATION_COLOUR- _PATTERN		The colour pattern of an <OBJECT> (for example: an <AID_TO_NAVIGATION>, a <BUOY>, a <BEACON>, and/or a <NAVIGATION_LIGHT>) of importance to navigation.
	BORDER_STRIPE	A band or stripe of colour that is displayed around the outer edge of an <OBJECT> and that may also form a border to an inner pattern or plain colour.		1
	CHECKERED	Alternate colours are used to create rectangles similar to a chessboard and/or draughtboard; checkered.		2
	DIAGONAL_STRIPES	Straight bands or stripes of differing colours painted diagonally.		3
	HORIZ_BANDS_TOP_TO_BOTTOM	Horizontal bands from top to bottom.		4
	HORIZ_STRIPES	Straight bands or stripes of differing colours painted horizontally.		5
	SINGLE_COLOUR	A single colour.		6
	SQUARED	Alternate colours are used to create squares similar to a chessboard and/or draughtboard in either a straight or diagonal pattern; squared. This pattern is also known as checker plate.		7
	STRIPES_DIRECTION_UNKNOWN	Straight bands or stripes of differing colours painted in an unknown <DIRECTION>.		8
	VERTICAL_STRIPES	Straight bands or stripes of differing colours painted vertically.		9
AID_TO_NAVIGATION_MARK_COLOUR		The colours of an <AID_TO_NAVIGATION> mark.
	BLACK	Black.		1
	BLACK_RED_BLACK	Black with red band.		2
	BLACK_YELLOW	Black above yellow band.		3
	BLACK_YELLOW_BLACK	Black with yellow band.		4
	GREEN	Green.		5
	GREEN_RED	Green above red band.		6
	GREEN_RED_GREEN	Green with red band.		7
	GREEN_WHITE	Green and white.		8
	ORANGE	Orange.		9
	RED	Red.		10
	RED_GREEN	Red above green band.		11
	RED_GREEN_RED	Red with green band.		12
	RED_WHITE	Red above white band.		13
	WHITE	White.		14
	YELLOW	Yellow.		15
	YELLOW_BLACK	Yellow above black band.		16
	YELLOW_BLACK_YELLOW	Yellow with black band.		17
	YELLOW_RED_YELLOW	Yellow with red band.		18
AID_TO_NAVIGATION_MARK_SYSTEM		The specific <SYSTEM> of marks that serve as an <AID_TO_NAVIGATION> and to which an <OBJECT> conforms.
	IALA	Either <<<IALA_REGION_A>>> or <<<IALA_REGION_B>>>.		1
	IALA_REGION_A	The IALA Region A <SYSTEM>.		2
	IALA_REGION_B	The IALA Region B <SYSTEM>.		3
	NO_SYSTEM_PRESENT	No <SYSTEM> is present.		4
	NON_IALA	A defined <SYSTEM> other than IALA; non-IALA.		5
	SIGNI	The SIGNI <SYSTEM>.		6
	US_INTRACOASTAL	The US intracoastal waterway <SYSTEM> (ICW), which runs from Manasquan Inlet in New Jersey to the Florida Keys, then north along the west <COAST> of Florida and west along the Gulf <COAST> to Brownsville, Texas.		7
	US_MODIFIED	The modified US <SYSTEM>.		8
	US_OLD	The old US <SYSTEM>.		9
	US_UNIFORM_STATE	The US USWMS, which covers inland boating.		10
	US_WESTERN_RIVER	The US Western Rivers <SYSTEM>, which includes the Mississippi <RIVER> and its tributaries.		11
AID_TO_NAVIGATION_MARKER_TYPE		The type of a <MARKER> serving as an <AID_TO_NAVIGATION>.
	ELEC_BEACON	Electronic <BEACON>. EXAMPLE Radar pulse.		1
	ELEC_BEACON_VIS_DAYMARK	<<<ELEC_BEACON>>> with an attached <<<VIS_DAYMARK>>>; electronic beacon with visual daymark.		2
	VIS_BEACON	Visual <BEACON>. EXAMPLE Flashing <LIGHT>.		3
	VIS_BEACON_VIS_DAYMARK	<<<VIS_BEACON>>> with an attached <<<VIS_DAYMARK>>>; visual beacon with visual daymark.		4
	VIS_DAYMARK	Visual <MARKER> having a distinctive colour and shape that serves to facilitate its recognition against a daylight viewing background; visual daymark.		5
AID_TO_NAVIGATION_STATUS		The status of an <OBJECT> as an <AID_TO_NAVIGATION>.
	LIT	<<<MARKED>>> and illuminated; lit.		1
	MARKED	Marked.		2
	UNLIT	<<<MARKED>>> but not illuminated; unlit.		3
	UNMARKED	Not <<<MARKED>>>; unmarked.		4
AID_TO_NAVIGATION_SYSTEM_TYPE		The type of a <SYSTEM> of <AID_TO_NAVIGATION>s.
	IALA	Either <<<IALA_REGION_A>>> or <<<IALA_REGION_B>>>.		1
	IALA_REGION_A	The IALA Region A <SYSTEM>.		2
	IALA_REGION_B	The IALA Region B <SYSTEM>.		3
	NON_IALA	A defined <SYSTEM> other than IALA; non-IALA.		4
	NONCONFORMING	Does not conform to any defined <SYSTEM>.		5
	SIGNI	The SIGNI <SYSTEM>.		6
	US_INTRACOASTAL	The US intracoastal waterway <SYSTEM> (ICW), which runs from Manasquan Inlet in New Jersey to the Florida Keys, then north along the west <COAST> of Florida and west along the Gulf <COAST> to Brownsville, Texas.		7
	US_MODIFIED	The modified US <SYSTEM>.		8
	US_OLD	The old US <SYSTEM>.		9
	US_UNIFORM_STATE	The US Uniform State Waterway Marking System (USWMS), which covers inland boating.		10
	US_WESTERN_RIVER	The US Western Rivers <SYSTEM>, which includes the Mississippi <RIVER> and its tributaries.		11
AIRCRAFT_CARRIER_CLASS		The class of an <AIRCRAFT_CARRIER>.
	ASTURIAS	Spain Principe de Asturias VSTOL.		1
	DE_GAULLE	France Charles de Gaulle light (nuclear powered).		2
	DORIA	Italy Andrea Doria VSTOL.		3
	ENTERPRISE	US Navy Enterprise multirole.		4
	GARIBALDI	Italy Giuseppe Garibaldi VSTOL.		5
	INVINCIBLE	UK Invincible class VSTOL.		6
	KENNEDY	US Navy John F. Kennedy multirole.		7
	KITTY_HAWK	US Navy Kitty Hawk class multirole.		8
	KUZNETSOV	Russia Kuznetsov multirole.		9
	NAREUBET	Thailand Chakri Nareubet small VSTOL.		10
	NIMITZ	US Navy Nimitz class multirole.		11
	SAO_PAULO	Brazil Sao Paulo light (Clemenceau class).		12
	VIRAAT	India Viraat VSTOL.		13
AIRCRAFT_FUNCTION		The operating function of an <AIRCRAFT>.
	AGRICULTURE	Applies seed, pesticides, and/or herbicides in agricultural <TERRAIN_SURFACE_REGION>s.		1
	AIR_DEFENCE	Engages in air defence operations.		2
	AMBULANCE	Transports sick and/or injured; ambulance.		3
	ASW	Engages in ASW operations.		4
	ATTACK	Engages in attack combat operations.		5
	BOMBER	Carries and drops bombs; bomber.		6
	CARGO	Transports <CARGO>.		7
	COMMAND_AND_CONTROL	Operates in a command and control mode.		8
	COMMERCIAL	Engages in commercial operations.		9
	EARLY_WARNING	Utilizes long-range radar to detect approaching <AIRCRAFT> and/or <MISSILE>s; early warning.		10
	ELECTRONIC_WARFARE	Engages in electronic warfare operations.		11
	EXPERIMENTAL	Engages in experimental operations.		12
	FIGHTER	Engages in aerial combat; fighter.		13
	OBSERVATION	Makes observations and records phenomena with instruments.		14
	PASSENGER	Carries passengers.		15
	PATROL	Engages in patrol operations.		16
	RECONNAISSANCE	Engages in reconnaissance operations.		17
	RESEARCH	Engages in research operations.		18
	SCOUT	Engages in scout operations.		19
	SEARCH_AND_RESCUE	Engages in search and rescue operations.		20
	SPECIAL_ELECTRONIC	Engages in special electronic operations.		21
	SPECIAL_OPERATIONS	Engages in special military operations.		22
	STRIKE	Engages in military <<<ATTACK>>>, assault, and/or strike operations.		23
	SURVEILLANCE	Engages in surveillance operations.		24
	TANKER	Transports liquids (for example: <PETROLEUM>) in bulk; tanker.		25
	TARGET	Serves as a target for training exercises and/or experimentation.		26
	TRAINER	Engages in training operations.		27
	TRANSPORT	Transports <EQUIPMENT>, <HUMAN>s, and/or <SUPPLIES_AND_EXPENDABLES>.		28
	UTILITY	Engages in utility operations.		29
AIRCRAFT_ICING_INTENSITY		The estimated intensity of the accumulation of <ICE> on exposed <SURFACE>s of an <AIRCRAFT> that is formed as the <AIRCRAFT> is flown through supercooled drops of <WATER> in <CLOUD>s and/or <PRECIPITATION>.
	NO_ICING	No icing.		1
	TRACE	The rate of accumulation becomes perceptible; trace. The 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).		2
	TRACE_IN_CLOUD	<<<TRACE>>> icing occurring in <CLOUD>s.		3
	TRACE_IN_PRECIP	<<<TRACE>>> icing occurring in <PRECIPITATION>.		4
	LIGHT	The rate of accumulation may create a problem if flight is prolonged in this environment (over 1 hour); light. Occasional use of de-icing/anti-icing <EQUIPMENT> removes/prevents accumulation. Icing does not present a problem if the de-icing/anti-icing <EQUIPMENT> is used.		5
	LIGHT_IN_CLOUD	<<<LIGHT>>> icing occurring in <CLOUD>s.		6
	LIGHT_IN_PRECIP	<<<LIGHT>>> icing occurring in <PRECIPITATION>.		7
	MODERATE	The rate of accumulation is such that even short encounters become potentially hazardous; moderate. Use of de-icing/anti-icing <EQUIPMENT> and/or flight diversion is necessary.		8
	MODERATE_IN_CLOUD	<<<MODERATE>>> icing occurring in <CLOUD>s.		9
	MODERATE_IN_PRECIP	<<<MODERATE>>> icing occurring in <PRECIPITATION>.		10
	SEVERE	The rate of accumulation is such that de-icing/anti-icing <EQUIPMENT> fails to reduce or control the hazard; severe. Immediate flight diversion is necessary.		11
	SEVERE_IN_CLOUD	<<<SEVERE>>> icing occurring in <CLOUD>s.		12
	SEVERE_IN_PRECIP	<<<SEVERE>>> icing occurring in <PRECIPITATION>.		13
AIRCRAFT_ICING_TYPE		The type of <ICE> that is expected to accumulate on the <SURFACE> of an <AIRCRAFT>.
	CLEAR	<ICE_GLAZE>; clear.	Figure 6.36.75.1	1
	FROST	<HOAR_FROST>.	Figure 6.36.75.2	2
	MIXED	Combination of <<<CLEAR>>>, <<<RIME>>>, and/or <<<FROST>>>; mixed.	Figure 6.36.75.3	3
	NONE_PRESENT	No icing is present; none present.		4
	RIME	<RIME>.		5
AIRCRAFT_PROPULSION_TYPE		The type of propulsion of an <AIRCRAFT>.
	ELECTRIC	Using an electric motor.		1
	JET	Using a means of jet propulsion.		2
	RECIPROCATING_ENGINE	Using a piston or pistons moving up and down in cylinders; reciprocating engine.		3
	ROCKET	Using a means of rocket propulsion.		4
	TURBOPROP	Using a <<<JET>>> that also drives a propeller; turboprop.		5
AIRCRAFT_TURBULENCE_FREQUENCY		The rate of occurrence of turbulence experienced by <AIRCRAFT>; aircraft turbulence frequency.
	CONTINUOUS	Greater than two thirds of the time; continuous [AIM, Table 7-1-7:Continuous].		1
	FREQUENT	Frequent.		2
	INFREQUENT	Infrequent.		3
	INTERMITTENT	Greater than or equal to one third of the time and less than or equal to two thirds of the time; intermittent [AIM, Table 7-1-7:Intermittent].		4
	NONE_OCCURRING	None occurring.		5
	OCCASIONAL	Less than one third of the time; occasional [AIM, Table 7-1-7:Occasional].		6
AIRCRAFT_TURBULENCE_INTENSITY		The intensity of turbulence experienced by <AIRCRAFT>.
	NO_TURBULENCE	No turbulence.		1
	LIGHT	Turbulence that momentarily causes slight, erratic changes in <AIRCRAFT> altitude and/or attitude (pitch, roll, yaw) or turbulence that causes slight, rapid and somewhat rhythmic bumpiness without appreciable changes in <AIRCRAFT> altitude or attitude; light.		2
	LIGHT_TO_MODERATE	Between <<<LIGHT>>> and <<<MODERATE>>>.		3
	MODERATE	Turbulence that causes changes in <AIRCRAFT> altitude and/or attitude occurs but the <AIRCRAFT> remains in positive control at all times despite variations in indicated airspeed, or turbulence that is similar to <<<LIGHT>>> but of greater intensity, causing rapid bumps or jolts without appreciable changes in <AIRCRAFT> altitude or attitude; moderate.		4
	MODERATE_TO_SEVERE	Between <<<MODERATE>>> and <<<SEVERE>>>.		5
	SEVERE	Turbulence that causes large, abrupt changes in <AIRCRAFT> altitude and/or attitude, usually with large variations in indicated airspeed and possibly with momentary loss of control; severe.		6
	SEVERE_TO_EXTREME	Between <<<SEVERE>>> and <<<EXTREME>>>.		7
	EXTREME	Turbulence in which the <AIRCRAFT> is violently tossed about, and is practically impossible to control; extreme. Extreme turbulence may cause structural damage to the <AIRCRAFT>.		8
AIRCRAFT_TYPE		The type of an <AIRCRAFT>.
	AIRSHIP	<AIRSHIP>.		1
	AMPHIBIOUS	Designed to take off and land on <WATERBODY>s; amphibious.		2
	BALLOON	<BALLOON>.		3
	BLIMP	<BLIMP>.		4
	DIRIGIBLE	<DIRIGIBLE>.		5
	DRONE	Pilotless and designed for remote control operation; drone.		6
	FIXED_WING	Designed with fixed wings.		7
	GLIDER	Designed to fly for long <<TIME_QUANTITY>>s without power; glider.		8
	LIGHT	Designed with reduced range and payload, generally for private or light commercial use.		9
	ROTARY_WING	Uses one or more aerofoils rotating in an approximately horizontal plane, providing all or most of the lift; rotary-wing [SOED, "rotary-wing"].		10
	SPACEPLANE	Designed for limited flight in <SPACE>; spaceplane.		11
	STOL	Designed for STOL operations.		12
	UNMANNED_AUTONOMOUS	Designed for unmanned autonomous flight.		13
	VARIABLE_WING	Designed with a variable position wing system for alteration of its shape to facilitate a wider range of performance.		14
	VTOL	Designed for VTOL operations.		15
AIRSPACE_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>.		1
	ALERT	Alert <REGION>.		2
	ANIMAL_PROTECTION	Permanent protection <REGION> containing wild <ANIMAL>s (especially <BIRD>s) and/or sensitive livestock.		3
	BIRD_BREEDING	Temporary protection <REGION> supporting nesting and breeding of wild <BIRD>s.		4
	BIRD_HAZARD	Hazards present due to <BIRD>s.		5
	BIRD_SANCTUARY	A <REGION> where <BIRD>s are bred and protected; bird sanctuary.		6
	CAUTION	Caution <REGION>.		7
	CONTROLLED_FIRING	Controlled, firing <REGION>.		8
	DANGER	Danger <REGION>.		9
	DEFENCE	Defence <REGION>.		10
	GAS_VENTING_STATION	Gas venting station.		11
	HAZARD_TO_AIRCRAFT	Hazard to <AIRCRAFT>.		12
	HELICOPTER_PROTECTION	Protection for <HELICOPTER>s.		13
	HIGH_INTENSITY_RADIO	High-intensity radio transmissions in vicinity.		14
	INDUSTRIAL_HAZARDS	Industrial hazards or <OBJECT>s needing protection.		15
	INTENSE_AIR_ACTIVITY	Intense air activity <REGION>.		16
	LFLY_AVOIDANCE	Low-flying avoidance <REGION>.		17
	LFLY_DEDICATED_USER	Low-flying dedicated user area.		18
	LFLY_TACTICAL_TRAINING	Low-flying tactical training area.		19
	MEDICAL	Health resorts and/or medical establishments.		20
	MICROLIGHT_FLYING	Intensive microlight or ultralight flying <REGION>.		21
	MILITARY_FLYING	Military flying zone.		22
	MILITARY_OPERATIONS	Military operations zone.		23
	NATURE_RESERVE	<NATURE_RESERVE>, <PARK>, or conservation <REGION> to be avoided.		24
	NON_FREE_FLYING	No free-flying.		25
	OPERATING	Operating <REGION>.		26
	PARACHUTE_DROP_ZONE	Parachute drop zone.		27
	PROHIBITED	Prohibited <REGION>.		28
	PROHIBITED_VFR	Prohibited - VFR.		29
	PROVOST_MARSHAL	Limitations on use imposed by local military police under the direction of the Provost Marshal.		30
	RESTRICTED	Restricted <REGION>.		31
	SPARSELY_SETTLED	Sparsely settled <REGION>.		32
	TEMPORARY_RESERVED	Temporary reserved <REGION>.		33
	TOWN_TO_BE_AVOIDED	<TOWN> to be avoided.		34
	WARNING	Warning <REGION>.		35
AIRSPACE_TYPE		The type of designated <AIRSPACE> within which some or all <AIRCRAFT> may be subject to air traffic control.
	ACC	The <REGION> associated with an ACC.		1
	ADVISORY	The <REGION> within 16,09 kilometres (10 statute miles) of an <AERODROME> where a <CONTROL_TOWER> is not operating but where a FSS is located; advisory [AIM, Section 3-5-1.a Local Airport Advisory (AAA)]. At such <LOCATION>s, the FSS provides advisory service to arriving and departing <AIRCRAFT>.		2
	AERODROME_ADVISORY	An advisory <REGION> for an <AERODROME>.		3
	AERODROME_CZ	An aerodrome <<<CONTROL_ZONE>>>.		4
	AERODROME_RADAR_SERVICE	A radar service <REGION> for an <AERODROME>.		5
	AERODROME_TRAFFIC_ZONE	An Aerodrome Traffic Zone.		6
	AIR_DEFENCE_IDZ	An Air Defence Identification Zone.		7
	AIR_TO_AIR_REFUELLING	An air-to-air refuelling area/track/route.		8
	ALTIMETER_SETTING_REGION	A geographical <REGION> for which the lowest value of QNH is forecast hourly and relayed by air traffic control centres; altimeter setting region.		9
	ARTCC	The <REGION> associated with an ARTCC.		10
	ARTCC_SECTOR_DISCRETE	A discrete sector of an ARTCC.		11
	BUFFER_ZONE	A buffer zone.		12
	CADIZ	A CADIZ.		13
	CCA	A CCA.		14
	CONTROL_AREA	A Control Area (CTA).		15
	CONTROL_ZONE	A <CONTROLLED_AIRSPACE> extending upwards from ground level to a specified upper limit; a protected <AIRSPACE> surrounding an <AERODROME> bounded by a circle of 3,70 kilometres (2 nautical miles) or 4,63 kilometres (2,5 nautical miles) <<RADIUS>> (depending on <<LENGTH>> of <RUNWAY>) centred on the mid-point of the longest <RUNWAY>; control zone.		16
	CONTROLLED_AIRSPACE	A <CONTROLLED_AIRSPACE>.		17
	CONTROLLED_VFR	A controlled VFR.		18
	DEWIZ	A DEWIZ.		19
	DEWMIZ	A DEWMIZ.		20
	FIC_FSS	The <REGION> associated with a FIC/FSS.		21
	FLIGHT_INR	A <REGION> where a variety of flight information (but not flight control) is provided by specific Flight Information Centres; flight information region. EXAMPLE The United Kingdom has two flight information regions, London and Scottish.		22
	FRENCH_PERIPHERAL_IDZ	A French peripheral IDZ.		23
	KOREA_LIMITED_IDZ	A Korea limited IDZ.		24
	LFLY_AREA	A low-flying area.		25
	LFLY_DEDICATED_USER	A dedicated user <<<LFLY_AREA>>>.		26
	LFLY_DIVIDING_LINE	A dividing line in a <<<LFLY_AREA>>>.		27
	LFLY_FLOW_ARROW	A flow arrow in a <<<LFLY_AREA>>>.		28
	LFLY_FLOW_CORRIDOR	A flow corridor <BOUNDARY> in a <<<LFLY_AREA>>>.		29
	LFLY_SUB_BOUNDARY	A <BOUNDARY_COMPONENT> of a <<<LFLY_AREA>>>; low-fly sub-boundary.		30
	LFLY_TACT_ROUTE	A tactical route <BOUNDARY> in a <<<LFLY_AREA>>>.		31
	LFLY_TACT_TRAINING	A tactical training <<<LFLY_AREA>>>.		32
	LFLY_WEATHER_CORRIDOR	A weather corridor in a <<<LFLY_AREA>>>.		33
	MANDATORY_RADIO_AREA	A mandatory radio area.		34
	MID_CANADA_IDZ	A mid-Canada IDZ.		35
	MLTRY_ATZ	A military ATZ.		36
	MLTRY_CLIMB_CORRIDOR	A positive <CONTROLLED_AIRSPACE> of defined vertical and horizontal dimensions extending from a military <AERODROME>; military climb corridor [AR310, "military climb corridor"].		37
	MLTRY_COMMON_AREA_CONTROL	The <REGION> associated with a MCAC.		38
	MLTRY_CTZ	A protected <REGION> surrounding certain military <AERODROME>s that normally extends for a 9,26 kilometre (5 nautical mile) <<RADIUS>> around the <AERODROME> and upwards from the <SURFACE> to 914,4 metres (3 000 feet) above the level of the <AERODROME>; military control zone. A 'stub' projection protects the final approach path to the main <RUNWAY> outwards from the <BOUNDARY> of the MATZ, enclosing a <REGION> 1,852 kilometre (two nautical mile) either side of the extended centre-line of the <RUNWAY> and upwards from 304,8 metres (1 000 feet) above the <SURFACE> to 914,4 metres (3 000 feet) above the <<ELEVATION>> of the <AERODROME>. Although recognition of a MATZ is not mandatory for civil <AIRCRAFT>, all MATZ <AERODROME>s offer a penetration service to civil traffic during operational hours.		39
	MDTRY_RADAR_SERVICE_AREA	A mandatory <<<RADAR_SERVICE_AREA>>>.		40
	MLTRY_SECTOR_CONTROL_CENTRE	The <REGION> associated with a military sector control centre (SCC-AM).		41
	MLTRY_UPPER	A military upper <REGION>.		42
	MOUNTAINOUS	A designated <MOUNTAINOUS_REGION>.		43
	OCA	A US FAA OCA.		44
	OCA_NON_FAA	An OCA other than FAA; OCA non-FAA.		45
	POSITIVE_CONTROL_AREA	A positive <<<CONTROL_AREA>>>.		46
	POSITIVE_CZ	A positive <<<CONTROL_ZONE>>>.		47
	RADAR_AREA	A radar area.		48
	RADAR_AREA_SECTOR_BOUNDARY	A sector <BOUNDARY> of a <<<RADAR_AREA>>>.		49
	RADAR_SERVICE_AREA	A radar service area.		50
	SAL_ENTRY	A special access lane entry.		51
	SAL_EXIT	A special access lane exit.		52
	SECURITY_IDZ	A security IDZ.		53
	SPC_RULES_AREA	A Special Rules Area (SRA).		54
	SPC_RULES_ZONE	A protected <AIRSPACE> surrounding an <AERODROME> and extending from the <SURFACE> upwards to a specific level that affords safety to air traffic movements; Special Rules Zone (SRZ). Designated in the vicinity of <AERODROME>s when the traffic level does not warrant the establishment of a CZ.		55
	SUB_FLIGHT_INR	A sub-flight INR.		56
	TERMINAL_CONTROL	A <REGION> of <CONTROLLED_AIRSPACE> at the intersection of airways in the vicinity of control zones around major <AERODROME>s; terminal control.		57
	TERMINAL_RADAR_SERVICE_AREA	A terminal <<<RADAR_SERVICE_AREA>>>.		58
	TRAFFIC_INZ	A traffic INZ.		59
	TRAINING	A <REGION> designated for training.		60
	TRANSITION_AREA	A transition area.		61
	UNCONTROLLED_AIRSPACE	<UNCONTROLLED_AIRSPACE>.		62
	UPPER_ADVISORY_AREA	An upper advisory area.		63
	UPPER_AIRSPACE_CENTRES	An upper airspace centres operational air traffic.		64
	UPPER_CONTROL_AREA	An upper <<<CONTROL_AREA>>>.		65
	UPPER_FLIGHT_INR	An upper <<<FLIGHT_INR>>>.		66
	VFR_SECTOR_BOUNDARY	A VFR sector <BOUNDARY>.		67
	ZONE_OF_INTERIOR	A zone of interior.		68
APERTURE_COVER_POSITION		The position of the covering (for example: a canopy and/or a hatch) of an <APERTURE>; aperture cover position.
	CLOSED	Completely closed.		1
	OPEN	Completely open.		2
	OPEN_OCCUPANT_VISIBLE	Fully open with the occupant visible.		3
	POPPED	Partially open so that an occupant can see through small openings between the hatch and the <STRUCTURE> onto which it closes; popped.		4
	POPPED_OCCUPANT_VISIBLE	Partially open with the occupant visible; popped occupant visible.		5
APERTURE_STATE		The state of closure of an <APERTURE>.
	CLOSED_LOCKED	Closed and locked.		1
	CLOSED_UNLOCKED	Closed and unlocked.		2
	FASTENED_SHUT	Fastened shut. EXAMPLES Nailed, screwed.		3
	OPEN	Open.		4
APRON_HARD_STANDING_FUNCTION		The function of an <APRON> or <HARD_STANDING>.
	AIRCRAFT_HANGAR_APRON	<APRON> associated with an <AIRCRAFT_HANGAR>.		1
	ALERT	A military <APRON> or <HARD_STANDING>, usually collocated with a <TAXIWAY> with rapid access to one end of a <RUNWAY>, used by combat-ready <AIRCRAFT> prepared to take off on short notice; alert.		2
	BASE_FLIGHT_APRON	An <APRON> on a military <AERODROME> that is used for support <AIRCRAFT>; base flight apron.		3
	COMPASS_ROSE	A painted compass rose is present on the <SURFACE>, and is used as a reference to calibrate on-board compasses on <AIRCRAFT>.		4
	DEPOT_APRON	An <APRON> collocated with airport cargo handling facilities; depot apron.		5
	DISPERSAL_HARD_STANDING	A <HARD_STANDING> for a single military <AIRCRAFT> designed to isolate the damage suffered by one <AIRCRAFT> from spreading to others during an attack; dispersal hard standing.		6
	ENGINE_RUN_UP	An <APRON> or <HARD_STANDING> where aircraft engines are occasionally pre-flight tested at high RPM; engine run-up.		7
	ENGINE_TEST_PAD	Engine test pad (<APRON>).		8
	FIRING_IN	Designed for the use of a single <FIGHTER_WINGED_AIRCRAFT> for zeroing-in and aligning forward-firing <WEAPON>s, located in a protected <REGION> opposite an <AERODROME_REVETMENT>; firing-in.		9
	MAINTENANCE	An <APRON> or <HARD_STANDING> where maintenance on <AIRCRAFT> is performed.		10
	OPERATIONAL	Used for the parking, marshalling, temporary storage, loading, or unloading of <AIRCRAFT>; operational.		11
	PAD	Has been designated for aircraft engine run-up, tabbing, or power checks and that is usually situated near the ends of <RUNWAY>s; pad.		12
	PARKING	Used for parking of <AIRCRAFT>.		13
	REFUELLING_HARD_STANDING	Refuelling <HARD_STANDING>.		14
	STUB_APRON	An <APRON> located on the short end of an abandoned <TAXIWAY>, <RUNWAY> or <RAMP>, or an <APRON> connected to a <RUNWAY> without the benefit of a <TAXIWAY>; stub.		15
	TRANSIENT_APRON	An <APRON> where space has been set aside for use by visiting <AIRCRAFT>; transient apron.		16
AQUEDUCT_TYPE		The type of an <AQUEDUCT>.
	CANAL	<CANAL>.		1
	ELEVATED_FLUME	Elevated on a suspended <FLUME>.		2
	FLUME	<FLUME>.		3
	IRRIGATION_DITCH	<IRRIGATION_DITCH>.		4
	ON_TERRAIN	Built directly on the <TERRAIN>.		5
	QANAT	Qanat.		6
	QANAT_SHAFT	<<<QANAT>>> with one or more access shafts.		7
	SLUICE	<SLUICE>.		8
	UNDERGROUND	Underground.		9
ARRESTING_GEAR_TYPE		The type of <DEVICE> at the end of a <RUNWAY> that is used to stop <AIRCRAFT>; arresting gear type.
	CABLE	A <LOAD_CABLE> that spans a <RUNWAY> or a flight deck on a <VESSEL> and is engaged by the arresting hook on an <AIRCRAFT> [J1-02, "aircraft arresting cable"]. EXAMPLE Aircraft arresting wire.		1
	JET_BARRIER	A <DEVICE>, other than a <<<CABLE>>>, that is designed to stop an <AIRCRAFT> by absorbing its forward momentum; jet barrier.		2
	NET	The principal <BARRIER> is a net.		3
ASSAULT_LANDING_CRAFT_TYPE		The type of a <LANDING_CRAFT> designed for amphibious assault operations.
	CHAHO_CLASS	North Korea Chaho class <COMBAT_SUPPORT_VESSEL>.		1
	CHONG_JIN_CLASS	North Korea Chong Jin class <COMBAT_SUPPORT_VESSEL>.		2
	KONGBANG_CLASS	North Korea Kongbang class assault hovercraft.		3
	LCAC_CLASS	US Navy LCAC.		4
	MOSKALENKO_CLASS	Russia Mitrofan Moskalenko (Ivan Rogov class) multirole amphibious <VESSEL>.		5
	OCEAN_CLASS	UK LPH01 Ocean class amphibious assault <HELICOPTER> carrier.		6
	POMORNIK_CLASS	Russia Pomornik class large hovercraft.		7
	SIR_BEDIVERE_CLASS	UK L3004 Sir Bedivere class with aft <HELICOPTER> deck.		8
	SIR_TRISTRAM_CLASS	UK L3505 Sir Tristram class amphibious assault <VESSEL>.		9
	TARAWA_CLASS	US Navy Tarawa class amphibious <COMBATANT_VESSEL>.		10
	WASP_CLASS	US Navy Wasp class amphibious <COMBATANT_VESSEL>.		11
ASW_WINGED_AIRCRAFT_TYPE		The type of an <ASW_WINGED_AIRCRAFT>.
	B_17G	Boeing B-17 Flying Fortress.		1
	H_16	Curtiss H-16.		2
	HS_2L	Curtiss HS-2L.		3
	MARS	Martin Mars.		4
	NIMROD	British Aerospace Nimrod.		5
	P_2	Lockheed P-2 Neptune.		7
	P_2Y	Consolidated P2Y.		8
	P_3	Lockheed P-3 Orion.		6
	P_4M	Martin P4M Mercator.		9
	P_5M	Martin P5M Marlin.		10
	P_6M	Martin P6M SeaMaster.		11
	PB_2Y_5	Consolidated PB2Y-5 Coronado.		12
	PB_4Y_1	Consolidated B-24 Liberator; PB4Y-1.		13
	PB_4Y_2	Consolidated PB4Y-2 Privateer.		14
	PBM	Martin PBM Mariner.		15
	PBN_1	Naval Aircraft Factory PBN-1 Nomad.		16
	PBO_1	Lockheed PBO-1 Hudson.		17
	PBY	Consolidated PBY Catalina.		18
	PM_1_2	Martin PM-1 and Martin PM-2.		19
	PV_1	Lockheed PV-1 Ventura.		20
	PV_2	Lockheed PV-2 Harpoon.		21
	R_4D_6	Douglas R4D-6 Skytrain.		22
	SB_2C	Curtiss-Wright SB2C Helldiver.		23
	XP_5Y_1	Consolidated Vultee XP5Y-1.		24
ATM_CEILING_METHOD		The method used to determine the <<ATM_CEILING>>.
	AIRCRAFT	By observation of the <<HEIGHT_AGL>> of the base of the lowest <CLOUD> from an <AIRCRAFT>.		1
	BALLOON	By observing the ascent of a balloon and the <<HEIGHT_AGL>> at which it disappears into the lowest <CLOUD>.		2
	ESTIMATED	By estimating the <<HEIGHT_AGL>> of the base of the lowest <CLOUD>; estimated.		4
	LASER_CEILOMETER	By measuring the <<TIME_QUANTITY>> taken for a pulse of coherent light to travel from a transmitter to the base of the lowest <CLOUD> and return to the receiver; laser ceilometer.		5
	MEASURED	By measurement of the <<HEIGHT_AGL>> of the base of the lowest <CLOUD>.		6
	MODELLED	By modelling, using numerical methods, the <<HEIGHT_AGL>> of the base of the lowest <CLOUD>; modelled.		7
	OBSCURATION_LIMIT	By the reported <<HEIGHT_AGL>> limit of <<VISIBILITY_DISTANCE>> into a surface-based obscuration.		8
	RADAR	By measuring the time taken for a radar pulse to travel from a transmitter to the base of the lowest <CLOUD> and return to the receiver.		9
	ROTATING_BEAM_CEILOMETER	By measurement of the angle of elevation of a light beam scanning the vertical plane, at the instant at which a proportion of the light scattered by the base of the lowest <CLOUD> is received by a photoelectric cell directed vertically upwards at a known distance from the light source; rotating beam ceilometer.		10
	STATISTICALLY_DERIVED	By deriving, using statistical methods, the <<HEIGHT_AGL>> of the base of the lowest <CLOUD>; statistically derived.		11
ATM_PRESSURE_CHANGE_QUALITY		The quality of an <<ATM_PRESSURE_CHANGE_TENDENCY_CATEGORY>> measurement.
	GOOD	The quality of the value was acceptable; good.		1
	NO_CHECK	No check on the quality of the value was performed.		2
	SUSPECT	The value may be in error; suspect.		3
	ERR_CORRECTED	The original value was erroneous and was corrected.		4
	ERR_CORRECTION_SUSPECT	<<<ERR_CORRECTED>>> but the corrected value may be in error; erroneous correction suspect.		5
	ERR	The value is erroneous.		6
	MISS_SUBST	<<<MISS>>>, so a substitute value was provided.		7
	MISS_SUBST_SUSPECT	<<<MISS_SUBST>>>, but the substitute value may be in error; missing substitute suspect.		8
	MISS	The value is missing.		9
ATM_PRESSURE_CHANGE_TENDENCY- _CATEGORY		The qualitative <<ATM_PRESSURE_CHANGE_3_HOUR>>; atmospheric pressure change tendency category.
	INC_THEN_DEC	Increasing then decreasing with <<ATM_PRESSURE>> the same or higher than 3 hours earlier.		1
	INC_THEN_STEADY	Increasing then steady; or increasing then increasing more slowly; with <<ATM_PRESSURE>> higher than 3 hours earlier.		2
	INC_PRESSURE_HIGHER	Steadily or unsteadily increasing with <<ATM_PRESSURE>> higher than 3 hours earlier.		3
	CHANGE_TO_INC	Decreasing or steady, then increasing; or increasing then increasing more rapidly; with <<ATM_PRESSURE>> higher than 3 hours earlier.		4
	STEADY_PRESSURE_EQUAL	Steady with <<ATM_PRESSURE>> the same as 3 hours earlier; steady pressure equal.		5
	DEC_THEN_INC	Decreasing then increasing with <<ATM_PRESSURE>> the same or lower than 3 hours earlier.		6
	DEC_THEN_STEADY	Decreasing then steady; or decreasing then decreasing more slowly; with <<ATM_PRESSURE>> lower than 3 hours earlier.		7
	DEC_PRESSURE_LESS	Steadily or unsteadily decreasing with <<ATM_PRESSURE>> lower than 3 hours earlier.		8
	CHANGE_TO_DEC	Steady or increasing, then decreasing; or decreasing, then decreasing more rapidly; with <<ATM_PRESSURE>> lower than 3 hours earlier.		9
ATM_PRESSURE_QUALITY		The quality of an <<ATM_PRESSURE>> measurement.
	GOOD	The quality of the value was acceptable; good.		1
	NO_CHECK	No check on the quality of the value was performed.		2
	SUSPECT	The value may be in error; suspect.		3
	ERR_CORRECTED	The original value was erroneous and was corrected.		4
	ERR_CORRECTION_SUSPECT	<<<ERR_CORRECTED>>> but the corrected value may be in error; erroneous correction suspect.		5
	ERR	The value is erroneous.		6
	MISS_SUBST	<<<MISS>>>, so a substitute value was provided.		7
	MISS_SUBST_SUSPECT	<<<MISS_SUBST>>>, but the substitute value may be in error; missing substitute suspect.		8
	MISS	The value is missing.		9
ATM_PROFILE_MEASUREMENT- _TECHNIQUE		The technique or method of collecting an <ATMOSPHERE_PROPERTY_SET> that is a series of measurements collected along a (roughly) vertical axis; atmospheric profile measurement technique.
	AIRCRAFT	Measured by an <AIRCRAFT> as it ascends or descends through the <ATMOSPHERE>.		1
	DROPSONDE	<<<RADIOSONDE>>> launched from an <AIRCRAFT>, with or without a parachute; dropsonde.		2
	PILOT_BALLOON	Measurement of upper <WIND>s by the optical tracking of a pilot balloon. A free balloon whose path while moving upwards is visually observed using a theodolite in order to measure upper <WIND>s.		3
	RADIOSONDE	Measured by a <SENSOR> that is part of a meteorological instrument package, often borne aloft by a free-flight balloon, provided with a radio transmitter; radiosonde.		4
	ROCKETSONDE	Measured by a <SENSOR> that is part of a meteorological instrument package that is carried aloft by rocket; rocketsonde.		5
	SATELLITE	Remotely sensed from an <ARTIFICIAL_SATELLITE>.		6
	WIND_PROFILER	Vertical profiles of the <WIND> are measured using Doppler radar operating in the VHF-UHF <<EM_BAND>> (30 megahertz-3 gigahertz) that determine the <<WIND_SPEED>> and <<WIND_DIRECTION>> by measuring the line-of-sight Doppler shift of scattered signals from refractive index fluctuations caused by turbulence; wind profiler.		7
ATM_TURBULENCE_TYPE		The type of turbulence in the <ATMOSPHERE> experienced by <AIRCRAFT>.
	CLEAR_AIR	In clear <AIR>.		1
	CLOUD	In <CLOUD>.		2
	NO_TURBULENCE	No turbulence is present.		3
	NOT_SPECIFIED	Not specified.		4
ATM_VERTICAL_REFERENCE		The <SURFACE_DATUM> and accompanying method of reporting the vertical displacement to an <OBJECT> (for example: a level in an <ATMOSPHERE>) in an <ATMOSPHERE>; atmosphere vertical reference.
	ICAO_STD_ATM	The reference <SURFACE_DATUM> is at 1 013,25 hectoPascals in the ICAO standard atmosphere and the resulting measurement is reported as the <<PRESSURE_ALTITUDE>>.		1
	ICAO_STD_ATM_FLIGHT_LEVEL	The reference <SURFACE_DATUM> is at 1 013,25 hectoPascals in the ICAO standard atmosphere and the resulting measurement is reported as an ICAO flight level.		2
	PLANETARY_SURFACE	The reference <SURFACE_DATUM> is a <PLANETARY_SURFACE> and the resulting measurement is reported as the height.		3
	STATION_ALTIMETER_SETTING	The reference <SURFACE_DATUM> is defined by the <<PRESSURE_ALTIMETER_SETTING>> and the resulting altimeter reading is reported as the indicated altitude; station altimeter setting.		4
	TRUE_ALTITUDE	The reference <SURFACE_DATUM> is MSL and the resulting measurement is reported as the true altitude.		5
ATS_ROUTE_COMPONENT_LEVEL		The flight level of an <ATS_ROUTE_COMPONENT>.
	ABOVE_195	Used above flight level 195 (nominally 5 950 metres, or 19 500 feet, although the actual flight level based on the standard atmosphere is slightly higher).		1
	BELOW_195	Used below flight level 195 (nominally 5 950 metres, or 19 500 feet, although the actual flight level based on the standard atmosphere is slightly higher).		2
	BOTH_195	Used both <<<ABOVE_195>>> and <<<BELOW_195>>>.		3
	ABOVE_245	Used above flight level 245 (nominally 7 500 metres, or 24 500 feet, although the actual flight level based on the standard atmosphere is slightly higher).		4
	BELOW_245	Used below flight level 245 (nominally 7 500 metres, or 24 500 feet, although the actual flight level based on the standard atmosphere is slightly higher).		5
	BOTH_245	Used both <<<ABOVE_245>>> and <<<BELOW_245>>>.		6
	NIGHT_LOW_FLYING	Special <ROUTE> dedicated to night, low-flying use.		7
ATS_ROUTE_TYPE		The type of an <ATS_ROUTE>.
	ADVISORY	ATS provides advice and information for the safe conduct of flight and movement of <AIRCRAFT>; advisory [F7110.65, "ADVISORY SERVICE"].		1
	AIR_ROUTE	A <<<CORRIDOR>>> pre-established by ATS for the safe conduct of flight and movement of <AIRCRAFT>; air route.		2
	AIRWAY	A control <REGION> or portion thereof established in the form of a <<<CORRIDOR>>> equipped with radio <AID_TO_NAVIGATION>s; airway [F7110.65, "AIRWAY [ICAO]"].		3
	AREA_NAVIGATION	A <REGION> permitting operation of <AIRCRAFT> on any desired course within the coverage of station-referenced navigation signals and/or within the limits of a self-contained system capability; area navigation [F7110.65, "AREA NAVIGATION (RNAV) [ICAO]"]. It is assigned by ATS upon pilot request.		4
	ATLANTIC	An <AIRSPACE> over the Atlantic Ocean which requires specific filing and navigation procedures.		5
	BAHAMAS	An <AIRSPACE> over the Bahamas which requires specific filing and navigation procedures.		6
	CANADIAN_CONTROL	An <AIRSPACE> over Canada which requires specific filing and navigation procedures; Canadian control.		7
	CORRIDOR	A corridor between two <AID_TO_NAVIGATION>s which includes the <CENTRE_LINE> of the corridor and the <AIRSPACE> up to 7,5 kilometres on either side of the <CENTRE_LINE> and altitudes between 350 and 7 500 metres above MSL.		8
	DIRECT	A straight <LINE> between two identified <AID_TO_NAVIGATION>s; direct [F7110.65, "DIRECT"].		9
	HELICOPTER	Designated for use by <HELICOPTER>s.		10
	HELICOPTER_MULTI_ENGINE	A <<<HELICOPTER>>> route that does not allow traversal by single-engine <HELICOPTER>s; helicopter multi-engine.		11
	JET	A high-altitude <<<AIRWAY>>> marked by longer-range transmitting VOR <AID_TO_NAVIGATION>s that enable it to be navigated by high-speed jet-powered <AIRCRAFT>.		12
	LOW_FLYING	Assigned by ATS to low-flying <AIRCRAFT>.		13
	MILITARY	An <AIRSPACE> reserved for military operations.		14
	NORTH_AMERICA	An <AIRSPACE> over the North American continent that requires specific filing and navigation procedures.		15
	OCEANIC	An <AIRSPACE> over the Pacific Ocean that requires specific filing and navigation procedures; oceanic.		16
	PURPLE_AIRWAY	Designated as a "PURPLE AIRWAY" by an ATS.		17
	ROYAL_HELICOPTER	Reserved for use by a <HELICOPTER> transporting royalty.		18
	ROYAL_LOW_LEVEL	Reserved for low-level flying by an <AIRCRAFT> transporting royalty.		19
	SUBSTITUTE	Assigned when any part of an <<<AIRWAY>>> or <ATS_ROUTE> is unusable because of <AID_TO_NAVIGATION>s status, consisting of: a) substitute <ATS_ROUTE>s, which are shown on national government charts, b) <ATS_ROUTE>s defined by ATC as specific <AID_TO_NAVIGATION> radials or courses, and c) <ATS_ROUTE>s defined by ATC as direct to, or between, <AID_TO_NAVIGATION>s [F7110.65, "SUBSTITUTE ROUTE"].		20
	TACAN	Designated for use by an <AIRCRAFT>, normally military, possessing TACAN with DME but no VOR navigational system capability.		21
ATS_USE_TYPE		The type of use of a designated ATS <AIRSPACE>.
	AERODROME_CZ	Aerodrome <<<CZ>>>.		1
	AIR_DEFENCE_ADVISORY	Advisory <REGION>, air defence.		2
	AIR_DEFENCE_IDZ	Air defence IDZ.		3
	AIRPORT_ADVISORY	Airport advisory <REGION>.		4
	AIRPORT_RADAR_SERVICE	Airport radar service <REGION>.		5
	AIRPORT_TRAFFIC	Airport traffic <REGION>.		6
	ALTIMETER_CHANGE_BOUNDARY	Altimeter change <BOUNDARY>.		7
	AREA_CONTROL	Area control centre.		8
	ARTCC	Air route traffic control centre.		9
	ARTCC_SECTOR	Air route traffic control centre sector or discrete.		10
	BERLIN_CZ	Berlin <<<CZ>>>.		11
	BUFFER_ZONE	Buffer zone.		12
	CANADIAN_AIR_DEFENCE_IDZ	Canadian air defence IDZ.		13
	CLASS_C_CZ	Class C CZ.		14
	CONTINENTAL_CONTROL	Continental <<<CONTROL_REGION>>>.		15
	CONTROL_REGION	Control <REGION>.		16
	CONTROL_VFR	Controlled VFR.		17
	CONTROLLED_AIRSPACE	<CONTROLLED_AIRSPACE>.		18
	CZ	CZ.		19
	CZ_NO_FIXED_WING	<<<CZ>>> and no fixed wing special visual flight rules permitted.		20
	DEW_EAST_MLTRY_IDZ	DEW East military identification zone.		21
	DEWIZ	DEWIZ.		22
	FLIGHT_INR	Flight INR.		23
	FRENCH_PERIPHERAL_IDZ	French peripheral IDZ.		24
	ICAO	ICAO.		25
	KOREA_LIMITED_IDZ	Korea limited IDZ.		26
	LOW_FLYING	Low-flying <REGION>.		27
	MID_CANADA_IDZ	Mid-Canada IDZ.		28
	MLTRY_AERODROME_TZ	Military aerodrome TZ.		29
	MLTRY_CLIMB_CORRIDOR	Military climb corridor.		30
	MLTRY_COMMON_REGION_CONTROL	Military common region control.		31
	MLTRY_TERMINAL_CZ	Military terminal CZ.		32
	MLTRY_UPPER_CZ	Military upper CZ.		33
	MOUNTAINOUS	Designated <MOUNTAINOUS_REGION>.		34
	OCA_FAA	US FAA OCA.		35
	OCA_NON_FAA	OCA other than FAA; OCA non-FAA.		36
	POSITIVE_CONTROL_REGION	Positive <<<CONTROL_REGION>>>.		37
	POSITIVE_CZ	Positive <<<CZ>>>.		38
	RADAR_REGION	Radar <REGION>.		39
	RADAR_SECTOR	The sector <BOUNDARY> of a <<<RADAR_REGION>>>.		40
	REFUELLING	A course used while refuelling an <AIRCRAFT> during flight.		41
	REFUELLING_OR_TRACK	<<<REFUELLING>>> and/or <<<TRACK>>>.		42
	SECURITY_IDZ	Security IDZ.		43
	SPECIAL_AIR_TRAFFIC_RULES	Special air traffic rules <REGION>.		44
	SPECIAL_OPERATIONS	Special operations <REGION>.		45
	SPECIAL_RULES_ZONE	Special rules zone.		46
	SPECIAL_USE_AIRSPACE	<SPECIAL_USE_AIRSPACE>.		47
	SUB_FLIGHT_INR	Sub-flight INR.		48
	TERMINAL_CONTROL	Terminal control <REGION>.		49
	TERMINAL_RADAR_SERVICE	Terminal radar service <REGION>.		50
	TRACK	Track.		51
	TRAFFIC_INZ	Traffic INZ.		52
	TRANSITION	Transition <REGION>; for chart use only.		53
	UNCONTROLLED	<UNCONTROLLED_AIRSPACE>.		54
	UPPER_ADVISORY_REGION	Upper advisory <REGION>.		55
	UPPER_AIRSPACE_CENTRE	Upper airspace centres, operational air traffic.		56
	UPPER_CONTROL_REGION	Upper <<<CONTROL_REGION>>>.		57
	UPPER_FLIGHT_INR	Upper <<<FLIGHT_INR>>>.		58
	ZONE_OF_INTERIOR	Zone of interior.		59
ATTACK_WINGED_AIRCRAFT_TYPE		The type of an <ATTACK_WINGED_AIRCRAFT>.
	A_1	A-1 "Skyraider", manufactured by Douglas.		1
	A_2	A-2 "Savage", manufactured by North American.		2
	A_3	A-3 "Skywarrior", manufactured by Douglas.		3
	A_4	A-4 "Skyhawk", manufactured by Douglas.		4
	A_5	A-5 "Vigilante", manufactured by North American.		5
	A_6	A-6 "Intruder", manufactured by Grumman.		6
	A_7	A-7 "Corsair" and "Corsair II", manufactured by LTV.		7
	A_9	A-9, manufactured by Northrop.		8
	A_10	A-10 "Thunderbolt" and "Thunderbolt II", manufactured by Fairchild Republic.		9
	A_12	A-12 "Avenger", manufactured by General Dynamics/McDonnell Douglas.		10
	A_26	A-26 "Counter Invader", manufactured by Douglas.		11
	A_37	A-37 "Dragonfly", manufactured by Cessna YA-37A.		12
	AC_47	AC-47 "Spooky", manufactured by Douglas.		13
	AC_119	AC-119G "Shadow" or AC-119K "Stinger", manufactured by Fairchild.		14
	AC_130	AC-130 "Spectre", manufactured by Lockheed.		15
	AU_23	AU-23 "Peacemaker", manufactured by Fairchild.		16
	AU_24	AU-24 "Stallion", manufactured by Helio.		17
	AV_8	AV-8 "Harrier", manufactured by McDonnell Douglas.		18
AUXILIARY_VESSEL_TYPE		The type of a <WATER_SURFACE_VESSEL> designed for auxiliary operations.
	APPLELEAF_CLASS_TANKER	An Appleleaf Class support tanker <VESSEL>. A <VESSEL> of this class has approximate dimensions: 170 by 26 metres.		1
	BULLDOG_CLASS_SURVEY	A Bulldog Class coastal survey <VESSEL>. A <VESSEL> of this class has approximate dimensions: 61 by 35 metres.		2
	FORT_GRANGE_CLASS_COMBAT- _SUPPORT	A Fort Grange Class <COMBAT_SUPPORT_VESSEL>. A <VESSEL> of this class has approximate dimensions: 184 by 24 metres.		3
	FORT_VICTORIA_CLASS_CARGO	A Fort Victoria Class multi-product <COMBAT_SUPPORT_VESSEL>. A <VESSEL> of this class has approximate dimensions: 204 by 29 metres.		4
	HECLA_CLASS_SURVEY	A Hecla Class hydrographic survey <VESSEL> also used for patrol and/or mine countermeasures. A <VESSEL> of this class has approximate dimensions: 80 by 15 metres.		5
	MOORHEN_CLASS_SALVAGE	A Moorhen Class salvage and mooring <VESSEL> designed for operating as a mooring <TENDER>, experiment support craft, and/or lifting craft. A <VESSEL> of this class has approximate dimensions: 32 by 12 metres.		6
	ROEBUCK_CLASS_SURVEY	A Roebuck Class surveying <VESSEL>. A <VESSEL> of this class has approximate dimensions: 64 by 13 metres.		7
	ROVER_CLASS_OILER	A Rover Class small oiler <VESSEL> designed for supporting distant stations. A <VESSEL> of this class has approximate dimensions: 140 by 19 metres.		8
	SAL_CLASS_MOORING	A Sal Class mooring <VESSEL> designed with large lifting abilities for mooring, <BUOY>, net tenders, major salvage, dive support and firefighting capabilities. A <VESSEL> of this class has approximate dimensions: 77 by 15 metres.		9
	STENA_CLASS_REPAIR	A Stena Class forward repair <VESSEL> designed for open-ocean salvage. A <VESSEL> of this class has approximate dimensions: 111 by 21 metres.		10
	TORNADO_CLASS_TORPEDO_RECOVERY	A Tornado Class torpedo recovery <VESSEL>. A <VESSEL> of this class has approximate dimensions: 48 by 9 metres.		11
AVAILABLE_FACILITIES_TYPE		The type of facilities available at, or in the near vicinity of, a <HARBOUR> or marina.
	BOAT_LIFT	<BOAT_LIFT>.		1
	BOAT_RAMP	Boat ramp.		2
	BOTTLE_GAS	Provides bottled or liquefied petroleum gas.		3
	CAMPGROUND	<CAMPGROUND>.		4
	CHANDLER	A dealer in supplies for <VESSEL>s; chandler.		5
	DESALINATION	<EQUIPMENT> for desalination.		6
	ELECTRICITY	A connection to an electrical supply.		7
	EMERGENCY_TELEPHONE	A <TELEPHONE> for emergency use only.		8
	FRESH_WATER	Fresh <WATER>.		9
	FUEL_STATION	A fuel station.		10
	HEALTH_OFFICE	<HEALTH_OFFICE>.		11
	HELIPAD	An improved <SURFACE> used for take-off, and landing, by <HELICOPTER>s and other VTOL <AIRCRAFT>; helipad.		12
	HOTEL	<HOTEL>.		13
	LAUNDERETTE	Launderette.		14
	MARINE_POLICE_STATION	<MARINE_POLICE_STATION>.		15
	NAUTICAL_CLUB	<NAUTICAL_CLUB>.		16
	NONE_AVAILABLE	None available.		17
	PARKING_FOR_BOATS	A place on <SHORE> where boats and/or trailers may be parked.		18
	PHARMACY	Pharmacy.		19
	PICNIC_TRACT	<PICNIC_TRACT>.		20
	POSTBOX	Postbox.		21
	PROVISIONS	A <MARKET> where food and other such supplies are available; provisions.		22
	PUBLIC_INN	<PUBLIC_INN>.		23
	PUBLIC_TELEPHONE	<PUBLIC_TELEPHONE>.		24
	PUBLIC_TOILET	Toilets are available for public use.		25
	RECREATIONAL_VEHICLE_PARK	A <VEHICLE_LOT> where recreational <VEHICLE>s may be parked and/or where recreational <VEHICLE> accommodation is provided.		26
	REFUSE_BIN	<REFUSE_BIN>.		27
	REPAIR_BUILDING	<REPAIR_BUILDING>.		28
	RESTAURANT	<RESTAURANT>.		29
	SAILMAKER	Sail manufacture and/or repair; sailmaker.		30
	SCRUBBING_BERTH	A <VESSEL_BERTH> designed for careening; scrubbing berth.		31
	SECURITY	A security service patrols and/or provides a secure lockup.		32
	SEWAGE_PUMP_OUT	<PUMP_OUT_FACILITY>.		33
	SHIPYARD	<SHIPYARD>.		34
	SHOWER	A shower.		35
	TICKET_SALE	Tickets may be purchased; ticket sale.		36
	VEHICLE_LOT	<VEHICLE_LOT>.		37
	VISITORS_BERTH	Temporary <VESSEL_BERTH> for visiting <VESSEL>s; visitors berth.		38
	VISITORS_MOORING	Temporary mooring for visiting <VESSEL>s; visitors mooring.		39
AVERAGING_PERIOD_CATEGORY		A category describing the <<AVERAGING_PERIOD>>.
	ONE_SECOND	One second.		1
	TWO_SECONDS	Two seconds.		2
	FIVE_SECONDS	Five seconds.		3
	TEN_SECONDS	Ten seconds.		4
	FIFTEEN_SECONDS	Fifteen seconds.		5
	THIRTY_SECONDS	Thirty seconds.		6
	ONE_MINUTE	One minute.		7
	TWO_MINUTES	Two minutes.		8
	FIVE_MINUTES	Five minutes.		9
	TEN_MINUTES	Ten minutes.		10
	FIFTEEN_MINUTES	Fifteen minutes.		11
	THIRTY_MINUTES	Thirty minutes.		12
	ONE_HOUR	One hour.		13
	TWO_HOURS	Two hours.		14
	THREE_HOURS	Three hours.		15
	FOUR_HOURS	Four hours.		16
	SIX_HOURS	Six hours.		17
	EIGHT_HOURS	Eight hours.		18
	TWELVE_HOURS	Twelve hours.		19
	TWENTY_FOUR_HOURS	Twenty-four hours.		20
AVIATION_LOCATION_ID_VALUE_SET		The value set of a formatted <<AVIATION_LOCATION_IDENTIFIER>>.
	ICAO	A specific location identifier, formatted in a Basic Latin string as specified in [I7910, Encode table].		2
	UNCONSTRAINED	A Basic Latin string whose contents are not further constrained; unconstrained.		1
	US_FAA	A specific location identifier, formatted in a Basic Latin string as specified in [F7350]; US FAA.		3
AVIATION_WAYPOINT_TYPE		The type of an <AVIATION_WAYPOINT>.
	AERODROME	<AERODROME>.		1
	ATC_COMPULSORY	ATC compulsory.		2
	BACK_COURSE_MARKER	Back course marker.		3
	DME_FIX	DME fix.		4
	END_CONTINUOUS_AIRWAY	End of continuous airway procedure.		5
	ESSENTIAL	Essential.		6
	FAN_MARKER	Fan marker.		7
	FINAL_APPROACH_COURSE_FIX	A bearing, radial, or track of an instrument approach leading to a <RUNWAY> or an extended centre-line of the <RUNWAY> all without regard to distance; final approach course fix [F7110.65, "FINAL APPROACH COURSE"].		8
	FINAL_APPROACH_FIX	The fix from which the final approach (IFR) to an <AERODROME> is executed and which identifies the beginning of the final approach segment [F7110.65, "FINAL APPROACH FIX"].		9
	FIRST_LEG_MISSED_APPROACH	The first leg of a missed approach.		10
	GATEWAY_FIX	The fix at which an <AIRCRAFT> enters a <SPECIAL_USE_AIRSPACE>; gateway fix.		11
	HOLDING_FIX	A specified fix identifiable to a pilot by <AID_TO_NAVIGATION>s or visual reference to the <LAND> used as a reference point in establishing and maintaining the position of an <AIRCRAFT> while holding [F7110.65, "HOLDING FIX"].		12
	INITIAL_APPROACH_FIX	Initial approach fix.		13
	INNER_MARKER	Inner marker.		14
	MIDDLE_MARKER	Middle marker.		15
	MISSED_APPROACH_POINT	A <LOCATION> prescribed in each IFR approach procedure at which a missed approach procedure shall be executed if the required visual reference does not exist; missed approach point [F7110.65, "MISSED APPROACH POINT"].		16
	NON_ESSENTIAL	Non-essential.		17
	OFF_AIRWAY	Off-airway.		18
	OUTER_MARKER	Outer marker.		19
	RUNWAY	Runway.		20
	RUNWAY_END_COORDINATE	Runway end coordinate.		21
	TRANSITION_ESSENTIAL	Transition-essential.		22
	UNCHARTED_AIRWAY_INTERSECT	Uncharted airway intersection.		23
	VOR_VORDME_VORTAC	A <LOCATION> along a <ROUTE> where services from an <AID_TO_NAVIGATION> providing VOR azimuth, TACAN azimuth, and TACAN DME from one source become available.		24

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