ICAO airport code system

E411425

airport code system aviation standard identifier scheme

The ICAO airport code system is an international standard that assigns unique four-letter identifiers to airports and aerodromes worldwide for use in aviation operations and air traffic management.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (5)

Label	Occurrences
ICAO location indicator system	2
ICAO Doc 7910 Location Indicators	1
ICAO VEHO	1
ICAO airport code system canonical	1
ICAO location indicator	1

How this entity was disambiguated

This entity first appeared as the object of triple T4074695 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: ICAO airport code system
Context triple: [SPJC, governedByStandard, ICAO airport code system]

A. ICAO airline designator system
The ICAO airline designator system is an international coding scheme that assigns unique three-letter identifiers to airlines for use in flight planning, air traffic control, and aviation operations.
B. IATA Airline Coding Directory
The IATA Airline Coding Directory is an official reference publication by the International Air Transport Association that lists and standardizes airline designator codes, accounting codes, and related identifiers used throughout the global aviation industry.
C. ICAO Annex 14 (general runway designation rules)
ICAO Annex 14 (general runway designation rules) is an international civil aviation standard that defines how runways are numbered, labeled, and marked to ensure consistent and safe identification worldwide.
D. AGS Airports
AGS Airports is a UK-based airport management company that owns and operates several regional airports in Scotland and England.
E. ICAO Air Navigation Commission
The ICAO Air Navigation Commission is a technical body of the International Civil Aviation Organization responsible for developing and reviewing global civil aviation standards, procedures, and policies for safe and efficient air navigation.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: ICAO airport code system
Target entity description: The ICAO airport code system is an international standard that assigns unique four-letter identifiers to airports and aerodromes worldwide for use in aviation operations and air traffic management.

A. ICAO airline designator system
The ICAO airline designator system is an international coding scheme that assigns unique three-letter identifiers to airlines for use in flight planning, air traffic control, and aviation operations.
B. IATA Airline Coding Directory
The IATA Airline Coding Directory is an official reference publication by the International Air Transport Association that lists and standardizes airline designator codes, accounting codes, and related identifiers used throughout the global aviation industry.
C. ICAO Annex 14 (general runway designation rules)
ICAO Annex 14 (general runway designation rules) is an international civil aviation standard that defines how runways are numbered, labeled, and marked to ensure consistent and safe identification worldwide.
D. AGS Airports
AGS Airports is a UK-based airport management company that owns and operates several regional airports in Scotland and England.
E. ICAO Air Navigation Commission
The ICAO Air Navigation Commission is a technical body of the International Civil Aviation Organization responsible for developing and reviewing global civil aviation standards, procedures, and policies for safe and efficient air navigation.
F. None of above. chosen

Statements (51)

Predicate	Object
instanceOf	airport code system ⓘ aviation standard ⓘ identifier scheme ⓘ
abbreviation	ICAO code system ⓘ
appliesTo	aerodromes ⓘ airports ⓘ some heliports ⓘ
codeLength	4 letters ⓘ
codeStructure	four-letter alphanumeric code ⓘ
covers	civil airports ⓘ joint-use aerodromes ⓘ military aerodromes ⓘ
dataPublishedIn	ICAO Doc 7910 Location Indicators ⓘ linked to: ICAO airport code system
designPrinciple	geographical regional structure ⓘ unique identifier per aerodrome ⓘ
differenceFrom	IATA airport code system uses three-letter codes ⓘ
excludes	most small private airstrips ⓘ
firstLettersIndicate	ICAO region ⓘ linked to: ICAO North America region country or state grouping ⓘ
goal	unambiguous global aerodrome identification ⓘ
identifierExample	EGLL ⓘ KJFK ⓘ linked to: JFK LFPG ⓘ RJTT ⓘ YSSY ⓘ
lastLettersIndicate	specific aerodrome ⓘ
maintainedBy	International Civil Aviation Organization ⓘ
primaryUse	operational and technical purposes ⓘ
regionPrefixExample	E for Northern Europe ⓘ K for contiguous United States ⓘ L for Southern Europe and Mediterranean ⓘ Y for Australia ⓘ Z for China ⓘ
relatedTo	IATA airport code system ⓘ
scope	worldwide ⓘ
secondaryUse	NOTAMs ⓘ aeronautical charts ⓘ flight plans ⓘ meteorological reports ⓘ
standardizedBy	ICAO Annex 15 ⓘ ICAO Doc 7910 ⓘ
usedBy	air traffic control units ⓘ airlines ⓘ aviation authorities ⓘ flight dispatchers ⓘ pilots ⓘ
usedFor	aeronautical information publications ⓘ air navigation services ⓘ air traffic management ⓘ aviation operations ⓘ flight planning ⓘ

How these facts were elicited