<simpleType name="CodeRuleProcedureTitleBaseType">
    <union>
        <simpleType>
            <restriction base="string">
                <enumeration value="ENTRY_TRANSIT_DEPARTURE_OF_AIRCRAFT" />
                <enumeration value="ENTRY_TRANSIT_DEPARTURE_SCHEDULED" />
                <enumeration value="ENTRY_TRANSIT_DEPARTURE_NON_SCHEDULED" />
                <enumeration value="ENTRY_TRANSIT_DEPARTURE_PRIVATE" />
                <enumeration value="PUBLIC_HEALTH_MEASURES_AIRCRAFT" />
                <enumeration value="CUSTOMS_REQUIREMENTS" />
                <enumeration value="IMMIGRATION_REQUIREMENTS" />
                <enumeration value="PUBLIC_HEALTH_MEASURES_PASSENGERS" />
                <enumeration value="ENTRY_TRANSIT_DEPARTURE_CARGO" />
                <enumeration value="AIRCRAFT_INSTRUMENTS_EQUIPMENT_FLIGHT_DOCUMENTS" />
                <enumeration value="NATIONAL_REGULATIONS" />
                <enumeration value="INTERNATIONAL_AGREEMENTS_CONVENTIONS" />
                <enumeration value="DIFFERENCES_ICAO_STANDARDS_RECOMMENDED_PRACTICES_PROCEDURES" />
                <enumeration value="MEASURING_SYSTEM_AIRCRAFT_MARKINGS_HOLIDAYS" />
                <enumeration value="ABBREVIATIONS_AIS_PUBLICATIONS" />
                <enumeration value="AERODROME_HELIPORT_CHARGES" />
                <enumeration value="AIR_NAVIGATION_SERVICES_CHARGES" />
                <enumeration value="FLIGHT_RULES_GENERAL" />
                <enumeration value="VISUAL_FLIGHT_RULES" />
                <enumeration value="INSTRUMENT_FLIGHT_RULES" />
                <enumeration value="ATS_AIRSPACE_CLASSIFICATION" />
                <enumeration value="HOLDING_APPROACH_DEPARTURE_PROCEDURES" />
                <enumeration value="ATS_SURVEILLANCE_SERVICES_PROCEDURES" />
                <enumeration value="ALTIMETER_SETTING_PROCEDURES" />
                <enumeration value="REGIONAL_SUPPLEMENTARY_PROCEDURES" />
                <enumeration value="AIR_TRAFFIC_FLOW_MANAGEMENT" />
                <enumeration value="FLIGHT_PLANNING" />
                <enumeration value="ADDRESSING_FLIGHT_PLAN_MESSAGES" />
                <enumeration value="INTERCEPTION_CIVIL_AIRCRAFT" />
                <enumeration value="UNLAWFUL_INTERFERENCE" />
                <enumeration value="AIR_TRAFFIC_INCIDENTS" />
                <enumeration value="AERODROME_HELIPORT_AVAILABILITY" />
                <enumeration value="LOCAL_TRAFFIC_REGULATIONS" />
                <enumeration value="NOISE_ABATEMENT_PROCEDURES" />
                <enumeration value="AERODROME_FLIGHT_PROCEDURES" />
                <enumeration value="AERODROME_BIRD_CONCENTRATION" />
            </restriction>
        </simpleType>
        <simpleType>
            <restriction base="string">
                <pattern value="OTHER(:(\w|_){1,58})?" />
            </restriction>
        </simpleType>
    </union>
</simpleType>

• CodeRuleProcedureTitleBaseType
• aixm:CodeRuleProcedureTitleType
• aixm:title