1. Operational Context and Use Case Focus Group
March 28, 2019

2. Agenda Schedule Integrated Terminal Weather System (ITWS)
Closeout
SWIM Terminal Data Distribution – Tower Departure Event Service (STDDS-TDES)
Operational Context
STDDS Airport Data Service (APDS)
Preview

3. Ops Context Document Schedule
November 2018
TAIS OCD Closeout
Flight UCD Closeout
FNS OCD
ITWS OCD Storyboard Flow UCD Storyboard
December 2018
Canceled due to holidays
January 2019
Canceled due to shutdown
February 2019
FNS OCD Closeout
ITWS OCD Flow UCD
TDES OCD Storyboard MET UCD Storyboard
March 2019
ITWS OCD Closeout Flow UCD Closeout
TDES OCD MET UCD
APDS OCD Storyboard
April 2019
TDES OCD Closeout MET UCD Closeout
APDS OCD
TFMS Status OCD Storyboard Aero UCD Storyboard
May 2019
APDS OCD Closeout
TFMS Status OCD Aero UCD
SFDPS General OCD Storyboard
June 2019
TFMS Status OCD Closeout Aero UCD Closeout
SFDPS General OCD
ISMC OCD Storyboard
July 2019
SFDPS General OCD Closeout
ISMC OCD
August 2019
ISMC OCD Closeout
Schedule moved 2 months to the right due to December and January meeting cancellations
At SWIFT #5 the group was interested in D-ATIS, which included in the STDDS-TDES feed
TDES storyboard inserted to the February schedule and moved subsequent Ops Context documents 1 month to the right
STDDS program currently reviewing Ops Context docs for TAIS, SMES, and TDES, SWIFT will provide APDS and ISMC docs to STDDS for review once drafted

4. Integrated Terminal Weather Service (ITWS)
Closeout
Integrated Terminal Weather Service (ITWS)

5. ITWS Description
Provides air traffic managers and controllers current and forecasts (up to 60 minutes) of terminal weather
Graphical weather information for decision support, collaboration, and common situational awareness
Uses sophisticated algorithms to integrate data from FAA and NWS sensors, radars, and weather models, and from aircraft in flight
Used during adverse weather at TRACONs, towers, ARTCCs, the Command Center, and airlines

6. ITWS Operational Context Document
Introduction
Terminal Weather Information
2.1 ITWS Overview – Brief description of where ITWS is used and how
2.2 ITWS Weather Products – Explain weather phenomena shared by ITWS products
ITWS Service Overview
Explanations of each ITWS message type and associated background information (e.g., data source, rate of detection, range of detection, accuracy, precision, etc.)
ITWS Message Types
Appendix A: Acronyms
4.1 Microburst TRACON Map Product
4.2 Microburst ATIS Product
4.3 Wind Shear ATIS Product
4.4 Gust Front TRACON Map
4.5 Gust Front ETI
4.6 Configured Alerts Product
4.7 Hazard Text 5nm Product
4.8 Hazard Text TRACON
4.9 Hazard Text Long Range
4.10 Terminal Weather Graphics
4.11 Terminal Weather Text Normal
4.12 Terminal Weather Text Special
4.13 Precipitation 5nm
4.14 Precipitation TRACON
4.15 Precipitation Long Range
4.16 AP Indicated Precipitation
4.17 Tornado Detections
4.18 Tornado Alert
4.19 Forecast Image
4.20 Forecast Accuracy
4.21 Forecast Contour
4.22 Storm Motion SEP 5nm
4.23 Storm Motion SEP TRACON
4.24 Storm Motion SEP Long Range
4.25 Runway Configuration
4.26 Wind Profile
4.27 AP Status
4.28 ITWS Status

7. Feedback No Feedback Received
If no comments are received, the draft will become the final

8. Operational Context
SWIM Terminal Data Distribution System - Tower Departure Event Service (STDDS-TDES)

9. STDDS-TDES Description
All Consumer Capabilities
Publishes Digital Automatic Terminal Information System (D-ATIS) information sent automatically to aircraft and operators at airports associated with STDDS TRACONs
Internal FAA Only Capabilities
Sends departure events for all flights from select towers associated with a TRACON
The service provides a reconstitution mechanism for end-users interested in receiving historic departure events upon startup

10. Sourcing STDDS-TDES

11. STDDS Sites

12. STDDS D-ATIS Sites Location (TRACON) Feeding Airports
Albuquerque (ABQ)
KABQ
KELP
Anchorage (A11)
PANC
Atlanta (A80)
KATL
Boston (A90)
KBOS
Buffalo (BUF)
KBUF
KCLE
Central Fla (F11)
KMCO
Charlotte (CLT)
KCLT
KGSO
Chicago (C90)
KMDW
KORD
Columbus (CMH)
KCMH
Dallas (D10)
KOKC
KDAL
KDFW
Denver (D01)
KDEN
Detroit (D21)
KDTW
Honolulu (HCF)
PHNL
Houston (I90)
KAUS
KMSY
KSAT
KHOU
KIAH
Indianapolis (IND)
KCVG
Location (TRACON)
Feeding Airports
Indianapolis (IND)
KIND
Jacksonville (JAX)
KCHS
KJAX
Kansas City (MCI)
KMCI
KTUL
Louisville (SDF)
KSDF
Memphis (M03)
KBNA
KLIT
KMEM
Miami (MIA)
KMIA
KPBI
KRSW
KFLL
KSJU
Milwaukee (MKE)
KMKE
Minneapolis (M98)
KMSP
New York (N90)
KEWR
KHPN
KJFK
KLGA
KTEB
Northern California (NCT)
KOAK
KRNO
KSFO
KSJC
Location (TRACON)
Feeding Airports
Northern California (NCT)
KSMF
Omaha (R90)
KOMA
Philadelphia (PHL)
KPHL
Phoenix (P50)
KLAS
KPHX
Pittsburgh (PIT)
KPIT
Portland (P80)
KPDX
Potomac (PCT)
KADW
KBWI
KDCA
KIAD
Providence (PVD)
KPVD
Raleigh Durham (RDU)
KRDU
Salt Lake (S56)
KBOI
KSLC
Seattle (S46)
KSEA
Southern California (SCT)
KBUR
KLAX
KONT
KSAN
KSNA
KVNY
St. Louis (T75)
KSTL
Tampa (TPA)
KTPA
Windsor Locks (Y90)
KALB
KBDL

13. STDDS-TDES Operational Context Document
Introduction
Terminal Information
Digital Automatic Terminal Information System
Tower Departure Events and Clearance Delivery
References
STDDS-TDES Service Overview
STDDS-TDES Publication Message Types
DATISData
TowerDepartureEventMessage
TowerDepartureEventReconstitutionStartMessage
TowerDepartureEventReconstitutionCompleteMessage
ReconstitutionRequestStatusMessage
Appendix A: Acronyms

14. STDDS-TDES Internal FAA Only Service Description Service Interface
STDDS TDES publishes departure events derived from Tower Data Link System (TDLS) and Electronic Flight Strip Transfer System (EFSTS) for all flights from towers associated with a STDDS Terminal Radar Approach Control (TRACON). In addition, the service provides a reconstitution mechanism for end-users interested in receiving historic departure events upon startup. TDES also publishes D-ATIS data received from TDLS.
Service Interface
Publish/Subscribe via JMS
Message Sets
Message Name
Description
TowerDepartureEventMessage
Sent upon the receipt of a corresponding event from EFSTS and/or TDLS. The MsgType indicates if this event is new (DE) or reconstituted (DR). Both types of messages may be enhanced with SFDPS flight plan data.
Note: The DR messages are available only for internal NAS consumers.
TowerDepartureEventReconstitutionStartMessage
Indicates the beginning of a set of reconstituted messages
Note: This message is available only for internal NAS consumers.
TowerDepartureEventReconstitutionCompleteMessage
Indicates the end of a set of reconstituted messages
ReconstitutionRequestStatusMessage
Response to a reconstitution request. The MsgType indicates if the reconstitution request has been accepted (RA) or rejected (RF).
DATISData
Sent upon the receipt of D-ATIS data from TDLS and repeated periodically per D-ATIS message data type (nominally every 60 seconds).
Note: The D-ATIS message data type is contained in the first character of the dataHeader field. Possible values: ‘C’ for Combined, ‘D’ for Departure, ‘A’ for Arrival.
Internal FAA Only

15. Preview
SWIM Terminal Data Distribution System – Airport Data Service (STDDS-apdS)

16. STDDS-APDS Description
Service only has one function/capability
Sends runway visual range observations for select towers associated with a TRACON

17. Sourcing STDDS-APDS

18. STDDS APDS Sites Currently deployed at 132 sites, planned for 145
Location (TRACON)
Feeding Airports
Potomac (PCT)
KADW
KBWI
KDCA
KIAD
KRIC
Providence (PVD)
KBTV
KPVD
Raleigh Durham (RDU)
KRDU
Salt Lake (S56)
KBIL
KBOI
KSLC
Seattle (S46)
KMWH
KGEG
KBFI
KPAE
KSEA
KALW
Southern California (SCT)
KBUR
KLAX
KLGB
KONT
KSAN
KSNA
KVNY
St. Louis (T75)
KCGI
KSTL
KSUS
Tampa (TPA)
KBTR
KGPT
KTPA
Windsor Locks (Y90)
KALB
KBAF
KBDL
KORH
Location (TRACON)
Feeding Airports
Albuquerque (ABQ)
KABQ
KELP
Anchorage (A11)
PANC
Atlanta (A80)
KBHM
KTYS
KATL
KCSG
KMCN
KMGM
Boston (A90)
KACK
KBOS
Buffalo (BUF)
KBUF
KCLE
KSYR
Central Fla (F11)
KDAB
KMCO
Charlotte (CLT)
KCLT
KGSO
Chicago (C90)
KFWA
KSPI
KDPA
KMDW
KORD
Columbus (CMH)
KCMH
KDAY
Dallas (D10)
KDFW
Denver (D01)
KCOS
KDEN
KGJT
Detroit (D21)
KFNT
KDTW
Location (TRACON)
Feeding Airports
Detroit (D21)
KYIP
Houston (I90)
KAUS
KCRP
KMSY
KSAT
KHOU
KIAH
Indianapolis (IND)
KCVG
KEVV
KHUF
KIND
Jacksonville (JAX)
KCAE
KCHS
KJAX
KSAV
Kansas City (MCI)
KFSM
KICT
KMCI
KTUL
Memphis (M03)
KLIT
KMEM
Miami (MIA)
KMIA
KPBI
KFLL
Milwaukee (MKE)
KGRB
KMKE
Minneapolis (M98)
KBIS
KFAR
KGFK
KMSP
New York (N90)
KACY
Location (TRACON)
Feeding Airports
New York (N90)
KEWR
KHPN
KISP
KJFK
KLGA
KTEB
Northern California (NCT)
KFAT
KMRY
KOAK
KRNO
KSFO
KSJC
KSMF
Omaha (R90)
KDSM
KOMA
Philadelphia (PHL)
KAVP
KPHL
KILG
Phoenix (P50)
KAMA
KPHX
Pittsburgh (PIT)
KCRW
KAGC
KPIT
Portland (P80)
KEUG
KLMT
KMFR
KPDX
KPSC

19. STDDS-APDS Operational Context Document
Introduction
Terminal Information
Runway Visual Range
References
STDDS-APDS Service Overview
STDDS-APDS Publication Message Types
RVRDataUpdateMessage
Appendix A: Acronyms

20. STDDS-APDS Service Description Service Interface Message Sets
The Airport Data Service sends runway visual range observations for select towers associated with a TRACON..
Service Interface
Publish/Subscribe via JMS
Message Sets
Message Name
Description
RVRDataUpdateMessage
Sent periodically (nominally every 60 seconds) and upon change of any published fields received from RVR.

21. References SWIFT Focus Group Website Documents
Documents
ITWS Operational Context Document v0.1 – Draft v1.0 Final
This document received no comments so unless input is received, the draft will become the final version
TDES Operational Context Document v0.1 – Draft
Please review TDES and provide feedback by March 15th, 2019
Next meeting is scheduled for March 28th 2019
Present STDDS-TDES Final, STDDS-APDS Draft, TFMS Status Storyboard
Contacts
Jay Zimmer
Felisa White

22. Backup

23. Overview of ITWS Products
Microburst TRACON Map Product
A microburst and a wind shear are the same phenomena, but are differentiated by intensity.
They are associated with thunderstorms.
They are a strong wind that spreads out in all directions. (Next Slide)
A wind shear has a wind speed of 25 knots or less
A microburst has a wind speed change of 30 knots or greater
A microburst can be up to about 2 miles in diameter
They can have wind speeds up to 168 mph.
Microbursts develop very suddenly (within two minutes), posing severe danger to aircraft.
They can result in a loss of lift to a slow moving aircraft close to the ground.
The ITWS Microburst Product shows the location of the gust front relative to the airport.

24. Microburst Depiction Tailwind at Exit Point is Hazardous

25. MBA Detection Red Circles are MBAs. Numbers indicate strength of MBA

26. Overview of ITWS Products
Gust Front TRACON Map Product
A gust front is a leading edge of cool air exiting a thunderstorm.
A sudden and large change in wind speed results. (Next Slide)
The wind speed and direction change can be hazardous for aviation.
The gust front can be 10 to 20 miles long.
ITWS detects gust fronts, and predicts their locations 10 and 20 minutes into the future.
The ITWS Gust Front Product shows the location of the gust front relative to the airport.

27. Depiction of a Gust Front. At the front, an abrupt wind change occurs.
East Wind
West Wind

28. Gust Front TRACON Map Product The two dotted lines are the predicted position of the gust front 10 minutes and 20 minutes from now. The arrow and number represent the predicted wind speed and direction behind the gust front.

29. Overview of ITWS Products
Gust Front ETI Product
The Gust Front ETI Product contains the estimated time for the gust front to reach the airport.
It provides an estimate when the front is within 20 minutes of reaching the airport.
This precise estimate gives planners a good idea when the airport will be impacted.
This allows users to develop improved mitigation strategies plus enhanced diversion and diversion recovery plans.

30. Gust Front Depiction. Solid line is gust front
First dashed line is where front will be in 10 minutes
Second dashed line is where front will be in 20 minutes
Gust Front
10 minutes
20 minutes

31. Overview of ITWS Products
Configured Alerts Product
A configured alert product is generated once every ten seconds for each runway.
Messages contain alert notifications if any Wx events (wind shear, microburst, gust front, tornado etc..) are predicted to affect the runway.
These message also contain the current runway configuration for the entire airport, and a reading for the current wind direction and speed for the midpoint of the runway.
The data includes the alert time, runway configuration, airport wind direction, speed, gust speed, and associated times.
The runway alert list shows alert type, loss or gain in knots, alert first and last locations, LLWAS wind direction and speed. (Next Slide)
Hazard Text Products
The Hazard Text products are used to associate additional textual information (such as cloud tops, hail, severe storm circulation) with the graphical products depicting the current storm.

32. Depiction of MBA Alert. Translation: Runway 13R Arrival, Microburst Alert, 50 knot loss on the runway, wind 210 degrees at 5 knots.

33. Overview of ITWS Products
Terminal Weather Graphics Product
The Terminal Weather Graphics Product is a text-based airport-specific product.
It summarizes in a character-based graphic display a subset of ITWS weather information, making the information available to Data Link Users and External Users.
The messages contain textual graphics depicting the location of precipitation, microbursts, and gust fronts near an airport.
Terminal Weather Text Special Product
The Terminal Weather Text products are text-based, airport-specific products generated when hazardous weather conditions impact or are expected to impact active runways.

34. Overview of ITWS Products
Terminal Weather Text Normal Product
The Terminal Weather Text Normal Product is a text-based airport-specific product that summarizes in text a subset of ITWS weather information for transmission to aircraft.
It contains airport ID, duration of event, time storm began, precipitation level (e.g. moderate, heavy), storm cell location from airport, movement speed and direction, and data about hail and wind shear/ microburst alerts.
A sample message:
KMCO 1830Z
ITWS TERMINAL WX
MICROBURST ALERT
30KT LOSS
BEGAN 1805
-STORM(S)AT ARPT
HAIL INM NE HVY PRECIP
MOVG W AT 15KT

35. Overview of ITWS Products
Tornado Detection Product
Provides the location, speed, and direction of all tornadoes. It is updated every 5 minutes.
Tornado Alert Product
Contains the alphanumeric text for the tornado alerts. It is sent following the Tornado Detection Product every 5 minutes. It contains the time of the report, a flag to indicate tornado existence, and the radius of the alert warning around the airport.
Wind Profile Product
Provides wind direction and speeds at different altitudes for designated locations associated with an airport.
Each message contains up to ten altitudes.

36. Overview of ITWS Products
Forecast Products
Forecast Image Product
Describes precipitation data for a TRACON. Each message contains several images: the most recent precipitation analysis used to generate the forecasts, plus up to six forecast images.
Forecast Accuracy Product
Contains the Forecast Accuracy Product for a specific airport.
Forecast Contour Product
Contains four high-probability contours, one each for the 30 and 60-minute forecast. Each contour is identified as to its type (standard or winter) and forecast period (30 or 60 minutes).
Storm Motion Storm Extrapolated Position Products
Provides the motion vectors and extrapolated positions showing storm motion.

37. Overview of TDES Products
Tower Departure Events
Publishes taxi start and takeoff time from select towers associated with a TRACON.
Identifies GUFI, call sign, departure and arrival airport, runway used.
Digital Air Traffic Information Service (D-ATIS)
Provides ATIS data in textual form.
Sent each time the D-ATIS is updated and repeated every 60 seconds.
The type of ATIS is displayed: ‘C’ for Combined, ‘D’ for Departure, ‘A’ for Arrival.