<simpleType name="CodeObstacleAssessmentSurfaceBaseType">
    <union>
        <simpleType>
            <restriction base="string">
                <enumeration value="40_TO_1" />
                <enumeration value="72_TO_1" />
                <enumeration value="MA" />
                <enumeration value="FINAL" />
                <enumeration value="PT_ENTRY_AREA" />
                <enumeration value="PRIMARY" />
                <enumeration value="SECONDARY" />
                <enumeration value="ZONE1" />
                <enumeration value="ZONE2" />
                <enumeration value="ZONE3" />
                <enumeration value="AREA1" />
                <enumeration value="AREA2" />
                <enumeration value="AREA3" />
                <enumeration value="TURN_INITIATION" />
                <enumeration value="TURN" />
                <enumeration value="DER" />
            </restriction>
        </simpleType>
        <simpleType>
            <restriction base="string">
                <pattern value="OTHER(:(\w|_){1,58})?" />
            </restriction>
        </simpleType>
    </union>
</simpleType>

• CodeObstacleAssessmentSurfaceBaseType
• aixm:CodeObstacleAssessmentSurfaceType
• aixm:obstructionIdSurfaceCondition
• aixm:type