System Overview
190-01499-02
GTX 3X5 Transponder TSO Installation Manual
Rev. 9
Page 1-15
1.14.1 Non-TSO Functions
The following are declared non-TSO functions, these non-TSO functions as defined in this manual have been evaluated
with the TSO functions. The design data for these non-TSO functions has been accepted by the FAA when these non-
TSO functions are installed in accordance with the guidance and limitations provided in this manual.
The GTX 3X5 includes the following non-TSO functions.
•
TIS-A (GTX 335)
•
Wireless data conversion (Bluetooth interface) (GTX 345)
1.14.2 Design Assurance Levels
Table 1-16 Software Design Assurance Levels
Table 1-17 Complex Hardware Design Assurance Levels
[1] Developed to DO-178B level B equivalent process.
System Function
DO-178B
Level
Mode S transponder functionality
C
Display of TIS-A traffic data
C
Flight information data (FIS-B, including weather information) processing and output to
display
D
Display of outside air temperature (static)
C
Flight timers
C
1090 ADS-B transmission
C
1090/UAT ADS-B reception
B
Correlation of TCAS traffic with ADS-B, ADS-R, and TIS-B traffic
B
Conflict Situational Awareness (CSA) including visual and aural alerts
B
External UAT ADS-B control
C
Internal GPS/SBAS
B
Pressure sensor module
C
Altitude monitor/alerting
C
Flight ID
C
Bluetooth output
E
HSDB packet forwarding
B
Data concentrator
C
Function
DO-254
Main board, transponder, and I/O
C
ADS-B board, 978 MHz and 1090 MHz receivers
C
GPS receiver
B [1]