Responsible Responsible Regulator / Auto / Met. Air-Ground Preferred System / Type Sensors Comms for Ground for GTS Provider Manual Information Format GTS Format Processing provision WMO Auto Innate to aircraft ACARS Always AMDAR NMHS NMHS BUFR Innate & pilot (from Auto & MOW or ICAO cockpit display and ACARS Always AIREP WAFC BUFR Manual WAFC subjective) Innate & (from VHF / MOW or PIREP FAA Manual cockpit display and Always WAFC BUFR ACARS WAFC subjective) ICAO Aircraft MOW or ADS-C ICAO Auto Innate to aircraft Optional WAFC BUFR Report WAFC ICAO Aircraft Mode-S ICAO Auto Innate to aircraft Derived ATC / NMHS NMHS BUFR L-Band (SSR) Report Other TAMDAR Auto Additional Satellite Always TAMDAR PAC NMHS BUFR (External) Innate to aircraft AFIRS (External) Auto Satellite Optional AFIRS FLYHT NMHS BUFR and/or additional Table 1: Sources of aircraft based observations.
System / Type Regulator / Provider Auto / Manual Sensors Comms Met. Information Air-Ground Format Responsible for Ground Processing Responsible for GTS provision Preferred GTS Format WMO Auto Innate to aircraft ACARS Always AMDAR NMHS NMHS BUFR ICAO Auto & Manual Innate & pilot (from cockpit display and subjective) ACARS Always AIREP MOW or WAFC WAFC BUFR PIREP FAA Manual Innate & (from cockpit display and subjective) VHF / ACARS Always MOW or WAFC WAFC BUFR ADS-C ICAO Auto Innate to aircraft Optional ICAO Aircraft Report MOW or WAFC WAFC BUFR Mode-S ICAO Auto Innate to aircraft L-Band (SSR) Derived ICAO Aircraft Report ATC / NMHS NMHS BUFR TAMDAR Other (External) Auto Additional Satellite Always TAMDAR PAC NMHS BUFR AFIRS (External) Auto Innate to aircraft and/or additional Satellite Optional AFIRS FLYHT NMHS BUFR Table 1: Sources of aircraft based observations.
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