Aeronautical Information Services (AIS) Data Link Ernie R. Dash Raytheon (FAA FISDL) RTCA SC-206/EUROCAE WG-44/53 Weather in the Cockpit (WIC) August 9, 2006

2 AIS and Met Data Link Services Joint RTCA SC-206/EUROCAE WG-44/53 tasks: –Define requirements for AIS and Met Data Link Services –Develop necessary data link system “standards and approval” documentation Insures standardization and interoperability Organized into two Subgroups –AIS Subgroup –Met Subgroup Meetings –Meet quarterly, Alternate between Europe and US –1 st Meeting: July 2006 –6 th Meeting: RTCA/Washington DC, September Approach –Follow guidelines for approval of Air Traffic Service data link communications

3 RTCA DO-264 / EUROCAE ED-78 “ Guidelines for Approval of the Provision and Use of Air Traffic Services Supported by Data Communications” Provides guidance and templates for “Minimum Acceptable Criteria” needed to support “Approvals” –Approvals include: Operator Operational Approval (i.e., Ops Specs, AC) Aircraft Type Design Approval (i.e., TSO, STC) ATS Provider Operational Approval (?? – a “New Cat”) –Minimum Acceptable Criteria are provided as either: Process Objectives, and/or Guidance for Evidence (that the Process Objective was met) –Key Process Objectives include: OSED – Operational Services and Environment Definition SPR – Operational Safety and Performance Requirements –OSA – Operational Safety Assessment –OPA – Operational Performance Assessment INTEROP – Interoperability Requirements

4 AIS / MET OSEDs – Drafts in Progress AIS Data Link Services – (Uplink – Combined into one OSED) –NOTAM Text –NOTAM Graphic –AIRAC Cycle – Complete –AIRAC Cycle – Updates –Non-AIRAC Cycle – Complete –Non-AIRAC Cycle – Updates MET Data Link Services – (Potential for two separate OSEDs) –Ground MET Data (Uplink) –Aircraft MET Data (Downlink/Crosslink)

5 Met OSED Challenges (Uplink) Defining specific ground Met products required to perform cockpit functions –Three classifications of pilot use or cockpit application identified Planning Decisions (greater than 20 minutes up to two hours or more) Near-Term Decisions (1-20 minutes) Reactive Decisions (immediate to less than 1 minute) –Candidate METLINK products are classified relative to the pilot use or cockpit application Defining the required timelines for data link communications and cockpit receipt –Little/no ICAO Annex 3 guidance –Especially new (potential) products

6 Pilot Use / Cockpit Application Decision Time Flight Environment TerminalCockpit Briefing CruiseTerminal AreaHazardous Situation Day/Hours HoursPlanning Decisions Hour 1-20 MinutesNear-Term Decisions < 1 MinuteReactive Decisions

7 Candidate METLINK Products Candidate Meteorological Products METLINK Data Point DataText AreaVector GraphicGridded Data Aerodrome Products Meteorological Aerodrome Report (METAR) P / N Terminal Aerodrome Forecast (TAF) P Wind Shear Warnings N / R Volcanic Activity Report P / N / R P = Planning Decision Product N = Near-Term Decision Product R = Reactive Decision Product

8 Current/Forecast Icing Potential (CIP/FIP) [ CIP Performance Statistics ] [ FIP Performance Statistics ] Future Product (?): AWC – ADDS - Icing 0200 UTC CIP 0200 UTC CIP-SLD 0300 UTC FIP 0400 UTC FIP 0600 UTC FIP 0900 UTC FIP 1200 UTC FIP See more detailed CIP/FIP plots in the Java Flight Path Tool Freezing level graphics: 0-hour 3-hour 6-hour 9-hour 12-hour Current Icing advisories: Pilot reports of Icing: FYI/Help

9 Data Link Service Criteria Broadcast

10 RCTP Communications Time Criteria: METLINK Planning (and Near-Term) Products Notes: 1. Initiator = Pilot or Avionics 2. Responder = Met Data Hub; Met Service Provider populates the Hub with appropriate data (see Note 3) 3. Met Data classified according to each category of service:  Planning Decision Support  Near-Term Decision Support  Reactive Decision Support 4.RCTP Transaction Times based on published criteria for D-ATIS (Ref: DO-290/ED-120: Safety and Performance Requirements for Air Traffic Data Link Service in Continental Airspace, Table 1, page 211)

11 Service Time Constraints COCR Version 1.0: Pg 85/Table 5-3 ParameterETTT95CA USE A PROVISION I RCTP: D-ATIS N/A DO-290/ED120: Pg 211/Table 1

12 Summary AIS and MET Data Link Services being defined –Minimal existing ICAO / WMO (or FAA) guidance that may be applied to defining OSED criteria –Feedback / input from WIC Workshop welcome Many RTCA SC-206/EUROCAE WG-44/53 Members attending WIC including : –MET Subgroup Chair: Rocky Stone (United Airlines) Meetings open for all to attend –Proceedings posted on website: