Operational Context and Use Case Focus Group

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 • 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. 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

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 • Service Description • 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 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

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 • The Airport Data Service sends runway visual range observations for select towers associated with a TRACON.. • Service Interface • Publish/Subscribe via JMS • Message Sets

21. References • SWIFT Focus Group Website • http://connect.lstechllc.com/index.cfm/main/opconfocusgroup • Documents • ITWS Operational Context Document v0.1 – Draftv1.0 Final • This document received no comments so unless input is received, the draft will become the final version • http://connect.lstechllc.com/files/ITWS%20Operational%20Context%20Document%20Draft%20v0.1_2019_02_28.docx • TDES Operational Context Document v0.1 – Draft • http://connect.lstechllc.com/files/TDES%20Operational%20Context%20Document%20Draft%20v0.1_2019_03_28.docx • 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 (jay.zimmer@lstechllc.com) • Felisa White (felisa.white@faa.gov)

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 DepictionTailwind at Exit Point is Hazardous

25. MBA DetectionRed 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 ProductThe 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.