Property talk:P230

The property value will be transformed to uppercase automatically. Testing: TODO list

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ICAO airline designator
three letter identifier for an airline (two letters only until 1982) (for airports, see P239)

Description	ICAO three letter code for identifying airlines - airline code (Q741701). For airports, rather use ICAO airport code (P239).
Represents	ICAO airline code (Q12364233)
Has quality	all caps (Q3960579)
Data type	String
Template parameter	"ICAO" in en:Template:Infobox Airline
Domain	According to this template: instances of airline (Q46970) According to statements in the property: airline (Q46970) When possible, data should only be stored as statements
Allowed values	According to this template: 3 uppercase characters According to statements in the property: [A-Z]{3} When possible, data should only be stored as statements
Example	Korean Air (Q213147) → KAL Turkish Airlines (Q4548) → THY Blue Wings (Q685605) → BWG
Source	airline code (Q741701) (note: this information should be moved to a property statement; use property source website for the property (P1896))
Tracking: usage	Category:Pages using Wikidata property P230 (Q27826988)
See also	ICAO airport code (P239), IATA airline designator (P229), flight number (P3090)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Database reports/Constraint violations/P230 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 3,510 Main statement 3,507 >99.9% of uses Qualifier 3 <0.1% of uses
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[create Create a translatable help page (preferably in English) for this property to be included here]

Type “airline (Q46970)”: item must contain property “instance of (P31)” with classes “airline (Q46970)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P230#Type Q46970, SPARQL

Single value: this property generally contains a single value. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P230#Single value, SPARQL

Format “[A-Z]{3}”: value must be formatted using this pattern (PCRE syntax). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P230#Format, SPARQL

Qualifiers “start time (P580), end time (P582), reason for deprecated rank (P2241), reason for preferred rank (P7452), latest start date (P8555), earliest date (P1319), earliest end date (P8554), latest date (P1326)”: this property should be used only with the listed qualifiers. (Help)

List of violations of this constraint: Database reports/Constraint violations/P230#allowed qualifiers, hourly updated report, SPARQL

Conflicts with “ICAO airport code (P239)”: this property must not be used with the listed properties and values. (Help)

List of violations of this constraint: Database reports/Constraint violations/P230#Conflicts with P239, hourly updated report, search, SPARQL

Scope is as main value (Q54828448): the property must be used by specified way only (Help)

List of violations of this constraint: Database reports/Constraint violations/P230#Scope, hourly updated report, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

List of violations of this constraint: Database reports/Constraint violations/P230#Entity types, hourly updated report

This property is being used by: it:Template:Infobox compagnia aerea, it:Template:Azienda ru:Шаблон:Карточка авиакомпании, ru:Шаблон:Авиакомпания hu:Sablon:Légikód, hu:Sablon:Légitársaság infobox, hu:Sablon:Wikiteszt uk:Шаблон:Авіакомпанія ca:Plantilla:Aerolínia zh-yue:Template:航空公司明細 hy:Կաղապար:Տեղեկաքարտ Ավիաընկերություն be-x-old:Шаблён:Авіякампанія pt:Predefinição:Info/Companhia aérea/Wikidata he:תבנית:חברה מסחרית, he:תבנית:חברה מסחרית/טבלת מזהי תעופה az:Şablon:Aviaşirkət eu:Txantiloi:Erakunde infotaula ha:Template:Infobox organization incubator:Template:Wp/shi/Infobox organization kab:Talɣa:Infobox organization shi:Talɣa:Infobox organization commons:Template:Airline/layout roa-tara:Template:Aziende be-tarask:Шаблён:Авіякампанія oc:Modèl:Infobox Organizacion yue:Template:航空公司明細 Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

Wrong restriction to 2 letters

Until 1982, the ICAO airline code was generally restricted to 2 (two) letters only. A transition to a 3 letter system was not completed until November 1987.

The restriction "[A-Z]{3}" is incorrect and has to be changed to include two letters as well to avoid faulty nuisance error messages. --Uli Elch (talk) 11:51, 24 August 2018 (UTC)

I removed 2 letters codes from documentation. It is another identification system (from the same organization). Lets create separate property if we need have it on Wikidata. — Ivan A. Krestinin (talk) 20:08, 1 January 2023 (UTC)

It is exactly the same identification system (from the same organization), valid worldwide until 1987. Therefore it belongs into that item. --Uli Elch (talk) 10:04, 2 January 2023 (UTC)

Proposal - Change Data type of ICAO airline designator (P230) from String to External identifier

I think String is the wrong type for ICAO airline designator (P230). Can we please change it to be External identifier.

As per Help:Data_type#Changing_datatype please indicate support/opposition below. Iwan.Aucamp (talk) 16:52, 15 October 2019 (UTC)

Discussion

•  Oppose These appear to be reused as well - see this query result. ArthurPSmith (talk) 17:17, 15 October 2019 (UTC)