ICAO ICD International Civil Aviation Organization Interface Control Document IP Internet Protocol IRD Interface Requirements Document ISMC Infrastructure System Monitor and Control ISO International Standards Organization JMS JMSDD MEP MTBF NA NA Java Messaging Service Java Messaging Service Description Document Message Exchange Pattern Mean Time Between Failures Not Applicable Not Adapted (airport) NAS National Airspace System NDRB NAS Data Release Board NEMS NSRR NAS Enterprise Messaging Service NAS Service Registry Repository PM R&D Program Manager Research and Development RVR SOA Runway Visual Range SWIM Flight Data Publication Service Service Oriented Architecture SSD SSI STD System Specification Document Sensitive Security Information Standard STARS STDDS SUI Standard Terminal Automation Replacement System SWIM Terminal Data Distribution System Sensitive Unclassified Information SWIM System-Wide Information Management TCP Transmission Control Protocol TDES TDLS Departure Event Service Tower Data Link Service TRACON Terminal Radar Approach Control facility
Qualities of Service The TDES Quality of Service parameters are listed in the following table. Table 1 : Quality of Services Parameters QoS Parameter Value Unit Definition Calculation Availability 0.999 The probability that a system or constituent may be operational during any randomly selected instant of time. (Definition from NAS-RD-2012) MTBF/(MTBF + MDT) Data Latency 1 second (mean) and 5 seconds (95th percentile) seconds Time interval from the time an input message is received and a corresponding message is published to NEMS. Note: Some messages do not result in a corresponding published message, however some of the data in that message may be utilized in a subsequent published message. Continuous measurement Reconstitute Response Time 2 Minutes Time interval from the time a reconstitution request message is received and when a reconstitution complete message is sent Continuous measurement NEMS Time 3 Minutes Maximum time interval from the time a connection failure to NEMS occurs to the time that the STDDS has reconnected to NEMS. Continuous measurement Service Policies No specific service policies are applied to the STDDS TDES.
UTC date and time at which a departure clearance was issued as reported by TDLS. Note: TDLS sends a Clearance Delivery message after the Airlines Operations Center acknowledged receiving the clearance. 0..1 dateTime parkingGate Aircraft parking gate information. 0..1 string taxiStartTime UTC date and time at which taxi start event was detected by STDDS TDES. 0..1 dateTime takeoffTime UTC date and time at which takeoff event was detected by STDDS TDES. 0..1 dateTime takeoffRunway Runway identifier as reported by 0..1 RunwayIdentifier enhancedData Collection of correlated fields derived from SFDPS flight plan data including ERAM GUFI, SFDPS GUFI, Departure Airport, Destination Airport, Aircraft Type and Beacon Code. The TowerDepartureEventMessage message may contain all of the fields in the enhancedData collection. The boolean attribute “s” can be set to indicate that the enhanced data is potentially stale due to a disruption in the flight plan data flow. 0..1 enhancedData TowerDepartureEventReconstitutionStartMessage Data Elements The following table lists the header for a TowerDepartureEventReconstitutionStartMessage. This message is available for internal NAS consumers only. 7 : TowerDepartureEventReconstitutionStartMessage Header Data Element Description Cardinality Type msgType Defines the type of message 1 string version Version number of the STDDS schema 1 string timestamp UTC date and time of message generation 1 dateTime
Data The following tables describe the data types defined in the STDDS TDES messages. Specific formats required for any data types will be included in the types’ definition text. The detail for the obligation and maximum occurrences of the data types and elements is included in the schema definitions within the NSRR. A type listed as complex means that the entity consists of one or more sub-entities, which are detailed in the entity’s definition. Table 16 : Simple Data Types Name Definition Permissible Values Data Type Format dateTime This type defines the date and time. It is a primitive data type. date and time AircraftIdentifier This type defines an aircraft identifier NA string .{1,8} This provides the reason for reconstitution request failure. NA (Not adapted airport), CR (client already receiving reconstitution) NA CR string NA 17 : Complex Data Types Name Definition Permissible Values Data Type Format Obligation RunwayIdentifier This type defines a runway identifier NA Complex NA NA The numeric of the runway NA Integer NA Required The orientation of the runway NA string NA Required enhancedData Data derived from SFDPS flight plan to enhance TDES messages. NA Complex NA NA ERAM GUFI derived from SFDPS flight plan data NA string NA Optional