<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31351427</termId><termName>airports</termName><termType>PT</termType><termNote><![CDATA[ Typically refers to large tracts of open, level land upon which runways, hangars, terminals, and other buildings have been constructed to allow for the takeoffs, landings, loading and unloading, and maintenance of aircraft. For smaller areas that have a runway but no or few additional facilities, see "airfields." ]]></termNote><termCreatedDate>2026-03-30 20:34:49</termCreatedDate><relation><relationType>UF</relationType><termId>31351428</termId><termName>aerodrome</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31351429</termId><termName>aerodromes</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31351430</termId><termName>air ports</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31351431</termId><termName>air terminal</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31351432</termId><termName>airdromes</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31351433</termId><termName>airport</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31351434</termId><termName>ports, air</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31350367</termId><termName>air transportation complexes</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>31323993</termId><termName>ports</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31383014</termId><termName>heliports</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31383016</termId><termName>taxiways</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31383023</termId><termName>runways</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31383027</termId><termName>overruns</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31325091</termId><termName>aircraft</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31351417</termId><termName>ports of entry</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31383536</termId><termName>airfields</termName><termType>PT</termType></relation></term>  </Zthes>