Garmin GDL 88 User Manual

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190-01122-03  Rev. A

GDL 88 ADS-B Transceiver Pilot’s Guide

ADS-B is a core technology in the FAA Next Gen air traffic control system and

is  comprised  of  three  segments:  ADS-B  (Broadcast),  ADS-R  (Rebroadcast),  and
TIS-B.

Nearly 400 ADS-B ground stations were completed and operational by mid-

2012,  with  most  of  the  rest  —  totaling  more  than  700  planned  stations  —
expected to be operational by early 2014. The graphic below illustrates where 
ADS-B is currently operational. In the areas highlighted in blue, you can already
start taking advantage of ADS-B’s datalink traffic and subscription-free weather 
services if you’re equipped with an ADS-B “In” solution.