Airport.md

@@ -19,10 +19,10 @@ The airport feature `Ahp` defines aerodromes, heliports and similar ground facil
   <codeType>AD</codeType>
   <xt_GpsIdent />
   <xt_TypeOfTraffic>
-    <Vfr />
+    <codeTraffic>VFR</codeTraffic>
   </xt_TypeOfTraffic>
   <xt_TypeOfUsage>
-    <Civ />
+    <codeUsage>CIV</codeUsage>
   </xt_TypeOfUsage>
   <xt_TypeOfAircraft />
   <xt_TypesOfFuel />