<?xml version="1.0" encoding="UTF-8" standalone="yes"?><AIXMBasicMessage xmlns="http://www.aixm.aero/schema/5.1/message" xmlns:aixm="http://www.aixm.aero/schema/5.1" xmlns:event="http://www.aixm.aero/schema/5.1/event" xmlns:fns="urn:us.gov.dot.faa.aim.fns" xmlns:fnse="http://www.aixm.aero/schema/5.1/extensions/FAA/FNSE" xmlns:gco="http://www.isotc211.org/2005/gco" xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:gts="http://www.isotc211.org/2005/gts" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" gml:id="NMS_ID_1776460484336129"><gml:boundedBy xsi:nil="true"/><hasMember><event:Event gml:id="Event_1_1776460484336129"><gml:identifier codeSpace="urn:uuid:">bd02c79e-26a9-4ffc-91c4-29dbcc187883</gml:identifier><gml:boundedBy xsi:nil="true"/><event:timeSlice><event:EventTimeSlice gml:id="Event_TS_1_1776460484336129"><gml:validTime><gml:TimePeriod gml:id="Event_TS_TP_1_1776460484336129"><gml:beginPosition>2026-04-18T04:00:00.000Z</gml:beginPosition><gml:endPosition>2026-04-18T09:00:00.000Z</gml:endPosition></gml:TimePeriod></gml:validTime><aixm:interpretation>BASELINE</aixm:interpretation><aixm:sequenceNumber>1</aixm:sequenceNumber><aixm:correctionNumber>0</aixm:correctionNumber><event:scenario>6000</event:scenario><event:textNOTAM><event:NOTAM gml:id="NOTAM_1_1776460484336129"><event:series>A</event:series><event:number>58</event:number><event:year>2026</event:year><event:type>N</event:type><event:issued>2026-04-17T21:13:00.000Z</event:issued><event:affectedFIR>KZAU</event:affectedFIR><event:selectionCode>QXXXX</event:selectionCode><event:minimumFL>000</event:minimumFL><event:maximumFL>999</event:maximumFL><event:location>ZAU</event:location><event:effectiveStart>202604180400</event:effectiveStart><event:effectiveEnd>202604180900</event:effectiveEnd><event:text>ZAU SVC FLIGHT DATA NOTAM SERVICES MAY BE IMPAIRED OR UNAVAILABLE
DUE TO TECHNICAL UPGRADES. STAKEHOLDERS SHOULD TAKE EXTRA TIME TO
GATHER NOTAM DATA DURING THIS OUTAGE. FOR QUESTIONS CTC CHICAGO/ZAU/ARTCC 
FLIGHT DATA UNIT 630-906-8306 OR FLIGHT SERVICE 800-992-7433 (1-800-WX-BRIEF) .</event:text><event:translation><event:NOTAMTranslation gml:id="NT02_1776460484336129"><event:type>OTHER:ICAO</event:type><event:formattedText><html:div xmlns:html="http://www.w3.org/1999/xhtml">&lt;pre&gt;
A0058/26 NOTAMN
Q) KZAU/QXXXX////000/999/
A) KZAU
B) 2604180400
C) 2604180900
E) ZAU SVC FLIGHT DATA NOTAM SERVICES MAY BE IMPAIRED OR UNAVAILABLE
DUE TO TECHNICAL UPGRADES. STAKEHOLDERS SHOULD TAKE EXTRA TIME TO
GATHER NOTAM DATA DURING THIS OUTAGE. FOR QUESTIONS CTC CHICAGO/ZAU/ARTCC 
FLIGHT DATA UNIT 630-906-8306 OR FLIGHT SERVICE 800-992-7433 (1-800-WX-BRIEF) .
&lt;/pre&gt;</html:div></event:formattedText></event:NOTAMTranslation></event:translation></event:NOTAM></event:textNOTAM><event:extension><fnse:EventExtension gml:id="ext_01_1776460484336129"><fnse:classification>INTL</fnse:classification><fnse:accountId>KZAU</fnse:accountId><fnse:xoveraccountID>IKK</fnse:xoveraccountID><fnse:xovernotamID>04/145</fnse:xovernotamID><fnse:airportname>ZAU ARTCC</fnse:airportname><fnse:originID>KZAU</fnse:originID><fnse:lastUpdated>2026-04-17T21:14:00.000Z</fnse:lastUpdated><fnse:icaoLocation>KZAU</fnse:icaoLocation></fnse:EventExtension></event:extension></event:EventTimeSlice></event:timeSlice></event:Event></hasMember></AIXMBasicMessage>