Table 1-16 Software Design Assurance Levels; Table 1-17 Complex Hardware Design Assurance Levels; Non-Tso Functions; Design Assurance Levels - Garmin GTX 3X5 Series Installation Manual

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

Mode S transponder functionality
Display of TIS-A traffic data
Flight information data (FIS-B, including weather information) processing and output to
display
Display of outside air temperature (static)
Flight timers
1090 ADS-B transmission
1090/UAT ADS-B reception
Correlation of TCAS traffic with ADS-B, ADS-R, and TIS-B traffic
Conflict Situational Awareness (CSA) including visual and aural alerts
External UAT ADS-B control
Internal GPS/SBAS
Pressure sensor module
Altitude monitor/alerting
Flight ID
Bluetooth output
HSDB packet forwarding
Data concentrator
Main board, transponder, and I/O
ADS-B board, 978 MHz and 1090 MHz receivers
GPS receiver
[1] Developed to DO-178B level B equivalent process.
190-01499-02
Rev. 9

Table 1-16 Software Design Assurance Levels

System Function

Table 1-17 Complex Hardware Design Assurance Levels

Function
GTX 3X5 Transponder TSO Installation Manual
System Overview
DO-178B
Level
C
C
D
C
C
C
B
B
B
C
B
C
C
C
E
B
C
DO-254
C
C
B [1]
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