ICAO airport code system
E411425
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.
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 airport code system
self-linksurface differs
ⓘ
surface form:
ICAO Doc 7910 Location Indicators
|
| designPrinciple |
geographical regional structure
ⓘ
unique identifier per aerodrome ⓘ |
| differenceFrom | IATA airport code system uses three-letter codes ⓘ |
| excludes | most small private airstrips ⓘ |
| firstLettersIndicate |
ICAO North America region
ⓘ
surface form:
ICAO region
country or state grouping ⓘ |
| goal | unambiguous global aerodrome identification ⓘ |
| identifierExample |
EGLL
ⓘ
JFK ⓘ
surface form:
KJFK
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
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: ICAO airport code system Description of subject: 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.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
ICAO VEHO
this entity surface form:
ICAO location indicator system
this entity surface form:
ICAO location indicator
this entity surface form:
ICAO location indicator system
this entity surface form:
ICAO Doc 7910 Location Indicators