AFMS, Garmin GTX 33X and 3X5 XPDR with ADS-B 190-00734-15 Rev. 3
FAA APPROVED Page 5 of 17
Figure 2 – GTX 33 or GTX 33D Interface Summary
The GTX 33X performs the following functions:
x Transmission of ADS-B out data on 1090 extended squitter (1090 MHz)
o Integration of data from internal and external sources to transmit the
following data per 14 CFR 91.227:
GPS Position, Altitude, and Position Integrity
Ground Track and/or Heading, Ground Speed, and Velocity Integrity
Air Ground Status
Flight ID, Call Sign, ICAO Registration Number
Capability and Status Information
Transponder Squawk Codes between 0000-7777.
Emergency Status
IDENT - initiates SPI (special position identification) pulse for 18
seconds
o Pressure Altitude Broadcast Inhibit
x Reception of TIS-A traffic data from a ground station
x Provides TIS-A traffic alerting to the pilot via interfaced display and audio
output
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