Skip to page content

USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Site Notification

Site Notification

United States Department of TransportationUnited States Department of Transportation

AC 20-149A (Cancelled) - Installation Guidance for Domestic Flight Information Services - Broadcast

Advisory Circulars home

Document Information

Cancellation notes
AC 20-149B
Date cancelled
December 21, 2015
Date issued
September 23, 2013
Responsible office
AIR-130,  Aviation Safety - Aircraft Certification Service, Aircraft Engineering Division

 a. This advisory circular (AC) supports the use of Flight Information Services - Broadcast (FIS-B) weather and other aeronautical data link products for enhanced situation awareness of flight conditions. In this AC, the Federal Aviation Administration (FAA) recommends one way to gain airworthiness approval for the installation of FIS-B avionics equipment. We identify safety and installation requirements for continued airworthiness of aircraft FIS-B avionics equipment, systems, and applications. This AC is not mandatory and does not constitute a regulation. This AC describes an acceptable means, but not the only means, to gain airworthiness approval for your FIS-B avionics equipment. However, if you use the means described in this AC, you must follow it in its entirety.

b. FIS-B was introduced to improve safety and to increase the utility, efficiency, and capacity of the National Airspace System (NAS). Timely delivery of quality, accurate, and consistent information is utilized by pilots for assisting in operational decisions.

c. This AC was revised to remove outdated information on the Flight Information Services Data Link (FISDL) program and replace with the current FIS-B system while maintaining alternative third party subscription services.

Document content