Automatic Dependent Surveillance-Broadcast (ADS-B) Operations
ADS-B operations — how Automatic Dependent Surveillance–Broadcast works and the procedures for operating with it.
About this document
AC 90-114, Automatic Dependent Surveillance–Broadcast (ADS-B) Operations, provides guidance on operating with ADS-B, the satellite-based surveillance system that broadcasts an aircraft's position to ATC and nearby traffic. It covers ADS-B Out and In, the traffic (TIS-B) and weather (FIS-B) services available, and the operational procedures and limitations pilots should understand.
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Take a free practice test →AC-90-114 is an official FAA publication in the public domain. We host a copy so you can read it in-browser; always confirm you are reading the current edition on faa.gov. The description above is an original summary and is a study aid, not a substitute for the document or the regulations.