190-01499-02
GTX 3X5 Transponder TSO Installation Manual
Rev. 4
Page 3-11
3.10
GTX Input Source Priority
The GTX 3X5 accepts data from multiple sources. If multiple sources supply data to the unit, only valid
data from the highest priority source is used. Source priorities are shown from highest to the lowest.
Figure 3-1 Air Data Discrete Priority Order
Is the Air Data Select
discrete configured?
Barometric Vertical Rate
Indicated Airspeed
True Airspeed
Barometric Pressure Setting
MCP/FCU Selected Altitude
Magnetic Heading
True Heading
Static Air Temp
Total Air Temp
Table 3-10
YES
Barometric Vertical Rate - Table 3-11
Indicated Airspeed - Table 3-12
True Airspeed - Table 3-13
Barometric Pressure Setting - Table 3-14
MCP/FCU Selected Altitude - Table 3-15
Magnetic Heading - Table 3-16
True Heading - Table 3-17
Static Air Temp - Table 3-18
Total Air Temp - Table 3-19
NO
Applicable Priority Tables
START
Are the ARINC 429
Sources configured as
EFIS/ADC?
YES
Barometric Vertical Rate - Table 3-10
Indicated Airspeed - Table 3-10
True Airspeed - Table 3-10
Barometric Pressure Setting - Table 3-14
MCP/FCU Selected Altitude - Table 3-15
Magnetic Heading- Table 3-16
True Heading - Table 3-17
Static Air Temp - Table 3-10
Total Air Temp - Table 3-10
NO
Are the ARINC 429
Sources configured as
ADC?
NO
YES