<simpleType name="CodeAltitudeAdjustmentBaseType">
    <union>
        <simpleType>
            <restriction base="string">
                <enumeration value="RA" />
                <enumeration value="AS" />
                <enumeration value="AT" />
                <enumeration value="AC" />
                <enumeration value="SI" />
                <enumeration value="XL" />
                <enumeration value="PR" />
                <enumeration value="HAA" />
                <enumeration value="MA" />
                <enumeration value="PT" />
                <enumeration value="DG" />
                <enumeration value="GS" />
                <enumeration value="CA" />
                <enumeration value="MT" />
                <enumeration value="MAH" />
                <enumeration value="SA" />
                <enumeration value="AAO" />
                <enumeration value="VA" />
            </restriction>
        </simpleType>
        <simpleType>
            <restriction base="string">
                <pattern value="OTHER(:(\w|_){1,58})?" />
            </restriction>
        </simpleType>
    </union>
</simpleType>

• CodeAltitudeAdjustmentBaseType
• aixm:CodeAltitudeAdjustmentType
• aixm:altitudeAdjustmentType