CHAPTER 2 A
DS
-B O
VER
VIE
W
ADS-B Pilot’s Guide
Page 2-5
091-00057-001 REV A
UAT (978 MHz) Approved Below 18,000 ft
Mode S with ES (1090 MHz)
Approved Any Altitude
Required above 18,000 ft
UAT ADS
-B Air
craf
t P
osition
Mode S ADS
-B Air
craf
t P
osition
FAA
ADS-B
Direct Mode S ADS-B
Aircraft Position
Direct UAT ADS-B
Aircraft Position
Wea
ther
Traffic
Traffic
Weather
FIS-B
Weather
Provider
Non-Equipped
Mode A/C
Aircraft Position
Non-ADS-B
Equipped
Mode A/C
Non-Equipped
Figure 2.1B
ADS-B IN
(FAA Illustration)