| Wikidata property with datatype string that is not an external identifier | Q21099935 |
| Wikidata property related to air transport | Q23069609 |
| P1793 | format as a regular expression | ((0?[1-9]|[1-2][0-9]|3[0-6])[LRC]?)(/(0?[1-9]|[1-2][0-9]|3[0-6])[LRC]?)? |
| P3254 | property proposal discussion | https://www.wikidata.org/wiki/Wikidata:Property_proposal/Archive/7#P529 |
| P3713 | category for value not in Wikidata | Category:Runway not in Wikidata, but available on Wikipedia | Q21291808 |
| P3734 | category for value same as Wikidata | ??? | Q32085234 |
| P2302 | property constraint | allowed qualifiers constraint | Q21510851 |
| format constraint | Q21502404 | ||
| subject type constraint | Q21503250 | ||
| allowed-entity-types constraint | Q52004125 | ||
| property scope constraint | Q53869507 | ||
| required qualifier constraint | Q21510856 | ||
| P2875 | property usage tracking category | Category:Pages using Wikidata property P529 | Q21291809 |
| P1659 | related property | IATA airport code | P238 |
| ICAO airport code | P239 | ||
| P2668 | stability of property value | sometimes changes | Q24025284 |
| P1629 | Wikidata item of this property | runway | Q184590 |
| Q184590 | runway | Wikidata property | P1687 |
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