b.
The weather products provided by FIS-B are for information only. Therefore, these products do not meet the safety and regula-tory requirements of of.cial weather products. The weather prod-ucts displayed on FIS-B should not be used as primary weather products, i.e., aviation weather to meet operational and safety requirements. Of.cial weather products (primary products) can be obtained from a variety of sources including ATC, AFSS’s, and, if applicable, AOCC VHF/HF voice, which can transmit aviation weather, NOTAMs, and other operational aeronautical information to aircraft in .ight. FIS-B augments the traditional ATC/FSS/AOCC services by providing additional information and, for some prod-ucts, offers the advantage of being displayed graphically. By using FIS-B for orientation and information, the usefulness of informa-tion received from of.cial sources may be enhanced, but the user
should be alert and understand any limitations associated with individual products. FIS-B provides the initial basic products listed below at no-charge to the user. Additional products are envi-sioned, but may incur subscription charges to the user. FIS-B reception is line-of-sight within the service volume of the ground infrastructure.
1. Airmen’s Meteorological Conditions (AIRMET)— Text/graphical report: A concise description of expected occur-rence of speci.ed en route weather phenomena.
Reference: Advisory Circular 00-45 “Aviation Weather Services”
2. Convective Signi.cant Meteorological Conditions (SIGMET)—Text report/graphical: Convective SIGMETs (also known internationally as SIGMET for Convection) are issued for the contiguous U.S. Each bulletin includes one or more Convec-tive SIGMETs for a speci.c region of the CONUS. Convective SIGMETs issued for thunderstorms and related phenomena do not include references to all weather associated with thunder-storms such as turbulence, icing, low-level wind shear and IFR conditions.
Reference: Advisory Circular 00-45 “Aviation Weather Services”
3. Aviation Routine Weather Reports (METAR)—Text reports: Surface meteorological data. The body of the report includes airport identi.er, time of observation, wind, visibility, run-way visual range, present weather phenomena, sky conditions, temperature, dew point, and altimeter setting. Remarks may be appended to the end.
Reference: Advisory Circular 00-45 “Aviation Weather Services”
4. Special Aviation Reports (SPECI)—Text reports: Non-routine, unscheduled report when any of SPECI criteria have been met. Contains all data elements found in METAR plus addi-tional information which elaborates on data.
Reference: Advisory Circular 00-45 “Aviation Weather Services”
5. Next Generation Radar (NEXRAD) (CONUS and Regional)—Derived from Next Generation Weather Radar (WSR–88D): Radar mosaic consists of multiple single site radar images combined to produce a graphical image on a regional or national scale. Regional and national radar mosaics can be found at the National Weather Service (NWS) Doppler Radar Images web site: http://radar.weather.gov/ridge/.
Reference: Advisory Circular 00-45 “Aviation Weather Services”
6. Notice to Airmen (NOTAM) Distant and Flight Data Cen-ter (D/FDC)—Text/graphical reports; includes Temporary Flight Restrictions (TFRs): TFR text and graphic reports, prescribes pro-cedures used to obtain, format, and disseminate information on unanticipated or temporary changes to components of or hazards in the NAS until the associated aeronautical charts and related publications have been amended.
Reference: FAA Order JO 7930.2, Notices to Airmen (NOTAM)
7. Pilot Weather Reports (PIREP)—Text report: Pilots report observations to assist other pilots with .ight planning and prepa-ration, help NWS verify forecast products, and create more accu-rate products for aviation community.
Reference: Advisory Circular 00-45 “Aviation Weather Services”
8. Signi.cant Meteorological Information (SIGMET)— Text/graphical report: Potentially hazardous en route phenomena such as thunderstorms and hail, turbulence, icing, sand and dust storms, tropical cyclones, and volcanic ash in an area affecting 3,000 square miles or an area deemed to have a signi.cant effect on safety of aircraft operations.
Reference: Advisory Circular 00-45 “Aviation Weather Services”
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