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The ATD-2 Poject delivered its final research transition package and was concluded on September 30, 2021. This page is being retained for reference and historical purposes, but the content is no longer being updated.

NASA Airspace Technology Demonstration 2 (ATD-2) Industry Workshop

ATD-2 Industry Workshop Documentation Outline / High Level ATD-2 Data Description

TFMS

Summary

The Traffic Flow Management Service (TFMS) is the source of the TFMData SWIM feed which produces multiple types of data. For ATD-2, the TFMData Flight Data and Terminal Flight Data messages are used to determine the status for all flights in the NAS. Below is a resource guide on where to get more information on TFDMData . Much of the information is available on the FAA NSRR which requires users to register an account (available to the general public):

TFMData Flight Data

TFMData Flight Data is designed to provide the same base data as legacy ASDI, enhanced with additional data related to flights being managed by TFMS including state data equivalent to, or representative of, the TFMS NAS Common Situation Model (NCSM).

Real World Effects of TFMData Flight Data

Flight Data is comprised of data from a variety of systems but the main contributor of input data is the Enroute Computer System and International Data Providers. TFMS has a consolidated view of the entire system and adds value to that information such that the resulting output is an accurate reflection of the state of the NAS in terms of traffic flow management. Flight Data is sent as it is updated, when there is a commanded change, or when there is a computed change. Users consuming Flight Data have the ability to construct a dataset (or database) consistent with TFMS.

TFMData Terminal Flight Data

The TFMData Terminal Flight Data business function provides data that TFMS receives from their partner airline systems to the FAA’s TFDM as an aggregate feed. TFDM uses the airline data along with data from other FAA systems to provide their Surface Collaborative Decision Making capability. TFMS makes use of certain data received from TFDM via this terminal flight data function to enhance departure time prediction, flight trajectories and demand predictions.

Real World Effects of Terminal Flight Data

When Terminal Flight Data provides an Earliest Off Block Time (EOBT), TFMS will update the estimated departure time of that flight accordingly.

TFMS TFMData Reference Material

Source	TFMS TFMData SWIM Feed
Description	TFMData replaces the legacy ASDI feed. A fltdMessage element is generated for each flight update in TFMS (e.g. a ERAM track update or a TFMS timeout delay message).
Schema	TFMS R13 TFMData Schema (included in JMSDD .zip file)
Samples	TfmsTestData_20150925.zip
JMSDD	TFMData JMSDD Appendix B - v2.0.5.docx

The two TFMData sources (Flight and Terminal Flight) are handled separately within the ATD-2 infrastructure. The data received from TFMData Flight is sent to the TfmFlightXml parser which extracts the information needed for ATD-2 and sends it to the Fuser. The format of the data coming out of the TfmFlightXml parser is known as "tfmsFlightTransferData". The data received from TFMData Terminal Flight is sent to the TfmTfdmProcessor which extracts the information beeded for ATD-2 and sends it to the Fuser. The format of the data coming out of the TfmTfdmProcessor is know as "TfmsTfdmFlightTransferData" (tfdm = Terminal Flight Data).

Below is the list of data elements extracted from the TFMData Flight Data message by the TfmFlightXml parser and sent to the Fuser.

tfmsFlightTransferData Data Dictionary

Element	Type	Description
acEqpPrefix	String	Aircraft equipment prefix
acEqpSuffix	String	Aircraft equipment suffix
acid	String	Aircraft ID
aircraftType	String	Aircraft type
altitude	Short	Current position altitude
altitudeAssigned	Short	Assigned altitude
altitudeFiled	Short	Filed altitude
altitudeRequested	Short	Requested altitude
altitudeType	String	Altitude type
arrAirport	String	Arrival airport
arrFix	String	Arrival fix
arrFixEstimatedTime	Date	Estimated time at arrival fix
arrivalRunwayActualTime	Date	Actual time at arrival runway
arrivalRunwayControlledTime	Date	Controlled time at arrival runway
arrivalRunwayEstimatedTime	Date	Estimated time at arrival runway
arrivalRunwayProposedTime	Date	Proposed time at arrival runway
arrivalRunwayScheduledTime	Date	Scheduled time at arrival runway
arrivalStandActualTime	Date	Actual time at arrival gate
arrivalStandEstimatedTime	Date	Estimated time at arrival gate
arrivalStandProposedTime	Date	Proposed time at arrival gate
beaconCode	Integer	Assigned aircraft beacon code
controlElement	String	TMI control element
currPos	LatLon	Current position latitude and longitude
depAirport	String	Departure airport
departureRunwayActualTime	Date	Actual time at departure runway
departureRunwayControlledTime	Date	Controlled time at departure runway
departureRunwayEstimatedTime	Date	Estimated time at departure runway
departureRunwayMeteredTime	Date	Metered time at departure runway (from TBFM)
departureRunwayProposedTime	Date	Proposed time at departure runway
departureRunwayScheduledTime	Date	Scheduled time at departure runway
departureStandActualTime	Date	Actual time at departure gate
departureStandEstimatedTime	Date	Estimated time at departure gate
departureStandInitialTime	Date	Initial time at departure gate (i.e. the TFMS IGTD)
departureStandProposedTime	Date	Proposed time at departure gate
depFix	String	Departure fix
depFixEstimatedTime	Date	Estimated time at departure fix
flightIndex	Integer	Flight index (i.e. the TFMS unique ID)
flightTraversalData	TfmsFlightTraversalData	TFMS modeled traversal data for the current route
gufi	String	The Fuser GUFI value
icaoArrAirport	String	Arrival airport code, ICAO format
icaoDepAirport	String	Departure airport code, ICAO format
listFixes	List<String>	TFMS modeled list of fixes for the current route
listSectors	List<String>	TFMS modeled list of sectors for the current route
messageType	String	TFMS message type that triggered the update
numAircraft	String	Number of aircraft in flight plan
physicalClass	String	Physical class
routeString	String	Route string
speed	Short	Current speed in knots
speedFiled	Short	Filed speed
timeStamp	Date	Message timestamp
userClass	String	User class
weightClass	String	Weight class

Below is the list of data elements extracted from the TFMData Terminal Flight Data message by the TfmTfdmProcessor and sent to the Fuser.

TfmsTfdmFlightTransferData Data Dictionary

Column Name	Type	Description
acid	varchar
airline	varchar
arr_arpt	varchar	Arrival airport
cdm_part	boolean	CDM Participant
country_airspace	varchar
dep_arpt	varchar	Departure airport
flight_acc_dep_rwys_values	varchar	Flight Acceptable Departure Runways
flight_acft_description_registration	varchar	Aircraft Registration
flight_arr_intent_to_hold_in_move	boolean	Arrival intent to hold in movement area
flight_arr_intent_to_hold_non_move	boolean	Arrival intent to hold in non-movement area
flight_arr_nas_aerodrome_icao_code	varchar	Arrival airport ICAO code
flight_arr_nas_aerodrome_unlisted_name	varchar	Arrival airport unlisted airport name
flight_arr_nas_rwy_time_airline_actual	timestamp without time zone	Actual Landing Time
flight_arr_nas_rwy_time_airline_actual_source	varchar	Source of Actual Landing Time
flight_arr_nas_stand_time_actual	timestamp without time zone	Actual In Block Time
flight_arr_nas_stand_time_actual_source	varchar	Source of Actual In Block Time
flight_arr_stand_assignment	varchar	Arrival stand
flight_arr_stand_available	boolean
flight_dep_intent_to_hold_in_move	boolean	Departure intent to hold in movement area
flight_dep_intent_to_hold_non_move	boolean	Departure intent to hold in non-movement area
flight_dep_nas_aerodrome_icao_code	varchar	Departure airport ICAO code
flight_dep_nas_aerodrome_unlisted_name	varchar	Departure airport unlisted airport name
flight_dep_nas_earliest_off_block_time	timestamp without time zone	Earliest off block time (note, this is not currently used by TFMS to store EOBT)
flight_dep_nas_rwy_time_airline_actual	timestamp without time zone	Actual takeoff time
flight_dep_nas_rwy_time_airline_actual_source	varchar	Actual takeoff time source
flight_dep_nas_rwy_time_earliest	timestamp without time zone	Earliest off block time
flight_dep_nas_rwy_time_earliest_source	varchar	Earliest off block time source
flight_dep_nas_rwy_time_original	timestamp without time zone	Initial gate time of departure
flight_dep_nas_rwy_time_original_source	varchar	Initial gate time of departure source
flight_dep_nas_stand_time_actual	timestamp without time zone	Actual off block time
flight_dep_nas_stand_time_actual_source	varchar	Actual off block time source
flight_dep_nas_stand_time_initial	timestamp without time zone	Initial departure stand time (note, this is not currently used by TFMS to store IOBT or IGTD)
flight_dep_nas_stand_time_initial_source	varchar	Initial departure stand time source
flight_dep_nas_stand_time_target	timestamp without time zone	Target departure stand time
flight_dep_nas_stand_time_target_source	varchar	Target departure stand time source
flight_dep_nas_target_m_a_entry_time	timestamp without time zone	Target movement area entry time
flight_dep_readiness	boolean	Departure readiness
flight_dep_stand_assignment	varchar	Departure stand assignment
flight_flight_ident_acid	varchar	ACID
flight_flight_ident_major_carrier	varchar	Major carrier
flight_flight_type	varchar
flight_initial_gate_time_dep	timestamp without time zone	The initial gate time of departure
flight_intent_return_to_gate	boolean
flight_intent_to_be_deiced	boolean
flight_intented_arr_spot	varchar
flight_intented_deice_location	varchar
flight_intented_dep_spot	varchar
flight_ref	varchar	TFMS flight reference ID
flight_target_take_off_time	timestamp without time zone
flight_tmat_marked_for_sub	boolean	TMAT marked for substitution
flight_tmat_relinquish	boolean
flight_unacc_dep_rwys_values	varchar	Unacceptable departure runways
msg_type	varchar	Message type (FLTC = cancel, FLTU = update)
sens_reason	varchar	Sensitivity reason
sensitivity	varchar	Sensitivity
source	varchar
source_facility	varchar
source_time_stamp	timestamp without time zone
xmit_time	timestamp without time zone	Message transmission time

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