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FAASTeam Notice
Type: General Information
Notice Date: Thursday, July 1, 2021
Notice Number: NOTC1924
Alaska FIS-B Enhancements
This posting will be removed on
Monday, August 1, 2022

The FAA recently enhanced the ADS-B Flight Information Services – Broadcast (FIS-B) products in Alaska. 

FIS-B automatically transmits a wide range of weather products with national and regional focus to all equipped aircraft who can receive data over 978 MHz (UAT).  

To enhance this valuable service in Alaska, the look ahead range of the following FIS-B products has been increased:

  • METAR and TAF (increase from 250/375 NM to 500 NM)
  • AIRMET, SIGMET, PIREP (increase from 250/375 NM to 500 NM)
  • NOTAM (increase from 100 NM to 500 NM)
  • G-AIRMET (increase from 250/375 NM to 500 NM)
  • CWA (increase from 250/375 NM to 500 NM)
  • Regional NEXRAD (increase from 150/200/250 NM to 500 NM)

The capability and availability of FIS-B products will vary based on individual ADS-B avionics, so please refer to your avionics manufacturer for details.

For more information on ADS-B, please visit the Equip ADS-B website at

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